pediatric-ai-scribe-v3/public/js/calculators.js

// ============================================================
// CALCULATORS.JS — Pediatric clinical calculators
// ============================================================

(function() {
  var _inited = false;
  document.addEventListener('tabChanged', function(e) {
    if (e.detail.tab !== 'calculators' || _inited) return;
    _inited = true;
    initCalculators();
  });

  function initCalculators() {
    // ── Top-level pill navigation (scoped to .calc-nav-pill only) ──
    document.querySelectorAll('.calc-nav-pill').forEach(function(pill) {
      pill.addEventListener('click', function() {
        document.querySelectorAll('.calc-nav-pill').forEach(function(p) { p.classList.remove('active'); });
        document.querySelectorAll('.calc-panel').forEach(function(p) { p.classList.add('hidden'); });
        pill.classList.add('active');
        var panel = document.getElementById('calc-' + pill.dataset.calc);
        if (panel) panel.classList.remove('hidden');
      });
    });

    // ═══════════════════════════════════════════════════════════
    // BP PERCENTILE — BCM/Rosner Quantile Spline Regression
    // AAP 2017 classification with exact percentile computation
    // ═══════════════════════════════════════════════════════════

    // Height LMS parameters (218 entries, index 0 = month 24 / age 2y, index 217 = month 241)
    var _htLMS_F_L=[1.07244896,1.051272912,1.041951175,1.012592236,0.970541909,0.921129988,0.868221392,0.81454413,0.761957977,0.711660228,0.664323379,0.620285102,0.57955631,0.54198094,0.511429832,0.482799937,0.455521041,0.429150288,0.403351725,0.377878239,0.352555862,0.327270297,0.301955463,0.276583851,0.251158446,0.225705996,0.20027145,0.174913356,0.149700081,0.12470671,0.100012514,0.075698881,0.051847635,0.02853967,0.005853853,-0.016133871,-0.037351181,-0.057729947,-0.077206672,-0.09572283,-0.113225128,-0.129665689,-0.145002179,-0.159197885,-0.172221748,-0.184048358,-0.194660215,-0.204030559,-0.212174408,-0.219069129,-0.224722166,-0.229140412,-0.232335686,-0.234324563,-0.235128195,-0.234772114,-0.233286033,-0.230703633,-0.227062344,-0.222403111,-0.216770161,-0.210210748,-0.202774891,-0.194515104,-0.185486099,-0.175744476,-0.165348396,-0.15435722,-0.142831123,-0.130830669,-0.118416354,-0.105648092,-0.092584657,-0.079283065,-0.065797888,-0.0521805,-0.03847825,-0.024733545,-0.010982868,0.002744306,0.016426655,0.030052231,0.043619747,0.05713988,0.070636605,0.08414848,0.097729873,0.111452039,0.125404005,0.13969316,0.154445482,0.169805275,0.185934346,0.203010488,0.2212252,0.240780542,0.261885086,0.284748919,0.309577733,0.336566048,0.365889711,0.397699038,0.432104409,0.46917993,0.508943272,0.551354277,0.596307363,0.643626542,0.693062173,0.744289752,0.79691098,0.85045728,0.904395871,0.958138449,1.011054559,1.062474568,1.111727029,1.158135105,1.201050821,1.239852328,1.274006058,1.303044695,1.326605954,1.344443447,1.356437773,1.362602695,1.363085725,1.358162799,1.348227142,1.333772923,1.315374704,1.293664024,1.269304678,1.242968236,1.21531127,1.186955477,1.158471522,1.130367088,1.103079209,1.076970655,1.052329922,1.029374161,1.008254396,0.989062282,0.971837799,0.95657215,0.94324228,0.931767062,0.922058291,0.914012643,0.907516917,0.902452436,0.898698641,0.896143482,0.894659668,0.89413892,0.894475371,0.895569834,0.897330209,0.899671635,0.902516442,0.905793969,0.909440266,0.913397733,0.91761471,0.922045055,0.926647697,0.931386217,0.93622842,0.941145943,0.94611388,0.95111043,0.956116576,0.961115792,0.966093766,0.971038162,0.975938391,0.980785418,0.985571579,0.99029042,0.994936555,0.999505539,1.003993753,1.0083983,1.012716921,1.016947912,1.021090055,1.025142554,1.029104983,1.032977233,1.036759475,1.040452117,1.044055774,1.047571238,1.050999451,1.054341482,1.057598512,1.060771808,1.063862715,1.066872639,1.069803036,1.072655401,1.075431258,1.078132156,1.080759655,1.083315329,1.085800751,1.088217496,1.090567133,1.092851222,1.095071313,1.097228939,1.099325619,1.101362852,1.103342119,1.105264876,1.107132561,1.108046193];
    var _htLMS_F_M=[84.97555512,85.3973169,86.29026318,87.15714182,87.9960184,88.8055115,89.58476689,90.33341722,91.0515436,91.7396352,92.39854429,93.02945392,93.63382278,94.21335709,94.79643239,95.37391918,95.94692677,96.51644912,97.08337211,97.6484807,98.21246579,98.77593069,99.33939735,99.9033122,100.4680516,101.033927,101.6011898,102.1700358,102.7406094,103.3130077,103.8872839,104.4634511,105.0414853,105.6213287,106.2028921,106.7860583,107.3706841,107.9566031,108.5436278,109.1315521,109.7201531,110.3091934,110.8984228,111.4875806,112.0763967,112.6645943,113.2518902,113.8380006,114.4226317,115.0054978,115.5863089,116.1647782,116.7406221,117.3135622,117.8833259,118.4496481,119.0122722,119.5709513,120.1254495,120.6755427,121.22102,121.7616844,122.2973542,122.827864,123.3530652,123.8728276,124.38704,124.8956114,125.398472,125.895574,126.3868929,126.8724284,127.3522056,127.8262759,128.2947187,128.757642,129.2151839,129.6675143,130.1148354,130.5573839,130.995432,131.4292887,131.8593015,132.2858574,132.7093845,133.1303527,133.5492749,133.9667073,134.3832499,134.7995463,135.2162826,135.634186,136.0540223,136.4765925,136.9027281,137.3332846,137.7691339,138.2111552,138.6602228,139.1171933,139.5828898,140.0580848,140.5434787,141.0396832,141.5471945,142.0663731,142.59742,143.1403553,143.6949981,144.2609497,144.8375809,145.4240246,146.0191748,146.621692,147.2300177,147.8423918,148.4568879,149.0714413,149.6838943,150.2920328,150.8936469,151.4865636,152.0686985,152.6380955,153.1929631,153.7317031,154.2529332,154.755501,155.2384904,155.7012216,156.1432438,156.564323,156.9644258,157.3436995,157.7024507,158.0411233,158.3602756,158.6605588,158.9426964,159.2074654,159.455679,159.688172,159.9057871,160.1093647,160.299733,160.4776996,160.6440526,160.7995428,160.9448916,161.0807857,161.2078755,161.3267744,161.4380593,161.5422726,161.639917,161.7314645,161.8173534,161.8979913,161.9737558,162.0449969,162.1120386,162.17518,162.2346979,162.2908474,162.343864,162.3939652,162.4413513,162.4862071,162.5287029,162.5689958,162.6072309,162.6435418,162.6780519,162.7108751,162.7421168,162.7718741,162.8002371,162.8272889,162.8531067,162.8777619,162.9013208,162.9238449,162.9453912,162.9660131,162.9857599,163.0046776,163.0228094,163.0401953,163.0568727,163.0728768,163.0882404,163.1029943,163.1171673,163.1307866,163.1438776,163.1564644,163.1685697,163.1802146,163.1914194,163.202203,163.2125835,163.2225779,163.2322024,163.2414722,163.2504019,163.2590052,163.2672954,163.2752848,163.2829854,163.2904086,163.297565,163.304465,163.3111185,163.3175349,163.3237231,163.3296918,163.3354491,163.338251];
    var _htLMS_F_S=[0.040791394,0.040859727,0.041142161,0.041349399,0.041500428,0.041610508,0.041691761,0.04175368,0.041803562,0.041846882,0.041887626,0.041928568,0.041971514,0.042017509,0.042104522,0.042199507,0.042300333,0.042405225,0.042512706,0.042621565,0.042730809,0.042839638,0.042947412,0.043053626,0.043157889,0.043259907,0.043359463,0.043456406,0.043550638,0.043642107,0.043730791,0.043816701,0.043899867,0.043980337,0.044058171,0.04413344,0.044206218,0.044276588,0.044344632,0.044410436,0.044474084,0.044535662,0.044595254,0.044652942,0.044708809,0.044762936,0.044815402,0.044866288,0.044915672,0.044963636,0.045010259,0.045055624,0.045099817,0.045142924,0.045185036,0.045226249,0.045266662,0.045306383,0.045345524,0.045384203,0.045422551,0.045460702,0.045498803,0.045537012,0.045575495,0.045614432,0.045654016,0.04569445,0.045735953,0.045778759,0.045823114,0.04586928,0.045917535,0.045968169,0.04602149,0.046077818,0.046137487,0.046200842,0.04626824,0.046340046,0.046416629,0.046498361,0.046585611,0.046678741,0.046778099,0.04688401,0.046996769,0.047116633,0.047243801,0.047378413,0.047520521,0.047670085,0.047826946,0.04799081,0.048161228,0.04833757,0.048519011,0.048704503,0.048892759,0.049082239,0.049271137,0.049457371,0.049638596,0.049812203,0.049975355,0.050125012,0.050257992,0.050371024,0.050460835,0.050524236,0.050558224,0.050560083,0.050527494,0.050458634,0.050352269,0.050207825,0.050025434,0.049805967,0.049551023,0.049262895,0.048944504,0.048599314,0.048231224,0.047844442,0.047443362,0.04703243,0.046616026,0.046198356,0.04578335,0.045374597,0.044975281,0.044588148,0.044215488,0.043859135,0.04352048,0.043200497,0.042899776,0.042618565,0.042356812,0.042114211,0.041890247,0.04168424,0.041495379,0.041322765,0.041165437,0.041022401,0.040892651,0.040775193,0.040669052,0.040573288,0.040487005,0.040409354,0.040339537,0.040276811,0.040220488,0.040169932,0.040124562,0.040083845,0.040047295,0.040014473,0.03998498,0.039958458,0.039934584,0.039913066,0.039893644,0.039876087,0.039860185,0.039845754,0.039832629,0.039820663,0.039809725,0.0397997,0.039790485,0.039781991,0.039774136,0.03976685,0.03976007,0.039753741,0.039747815,0.039742249,0.039737004,0.039732048,0.039727352,0.03972289,0.03971864,0.039714581,0.039710697,0.039706971,0.039703391,0.039699945,0.039696623,0.039693415,0.039690313,0.039687311,0.039684402,0.039681581,0.039678842,0.039676182,0.039673596,0.039671082,0.039668635,0.039666254,0.039663936,0.039661679,0.039659481,0.039657339,0.039655252,0.039653218,0.039651237,0.039649306,0.039647424,0.039645591,0.039643804,0.039642063,0.039640367,0.039638715,0.039637105,0.039636316];
    var _htLMS_M_L=[0.941523967,1.00720807,0.837251351,0.681492975,0.538779654,0.407697153,0.286762453,0.174489485,0.069444521,-0.029720564,-0.124251789,-0.215288396,-0.30385434,-0.390918369,-0.254801167,-0.125654535,-0.00316735,0.11291221,0.222754969,0.326530126,0.42436156,0.516353108,0.602595306,0.683170764,0.758158406,0.827636736,0.891686306,0.95039153,1.003830006,1.05213569,1.0953669,1.133652119,1.167104213,1.195845353,1.220004233,1.239715856,1.255121285,1.266367398,1.273606657,1.276996893,1.276701119,1.272887366,1.265728536,1.255402281,1.242090871,1.225981067,1.207263978,1.186140222,1.162796198,1.137442868,1.110286487,1.081536236,1.05140374,1.020102497,0.987847213,0.954853043,0.921334742,0.887505723,0.85357703,0.819756239,0.786246296,0.753244292,0.720940222,0.689515708,0.659142731,0.629997853,0.602203984,0.575908038,0.55123134,0.528279901,0.507143576,0.487895344,0.470590753,0.455267507,0.441945241,0.430625458,0.421291648,0.413909588,0.408427813,0.404778262,0.402877077,0.402625561,0.40391127,0.406609232,0.410583274,0.415687443,0.421767514,0.428662551,0.436206531,0.44423,0.45256176,0.461030578,0.469466904,0.477704608,0.48558272,0.492947182,0.499652617,0.505564115,0.510559047,0.514528903,0.517381177,0.519041285,0.519454524,0.518588072,0.516433004,0.513006312,0.508352901,0.502547502,0.495696454,0.487939275,0.479449924,0.470437652,0.461147305,0.451858946,0.442886661,0.434576385,0.427302633,0.421464027,0.417477538,0.415771438,0.416777012,0.420919142,0.428606007,0.440218167,0.456097443,0.476536014,0.501766234,0.531951655,0.567179725,0.607456565,0.652704121,0.702759868,0.757379106,0.816239713,0.878947416,0.945053486,1.014046108,1.085383319,1.158487278,1.232768816,1.307628899,1.382473225,1.456720479,1.529810247,1.601219573,1.670433444,1.736995571,1.800483802,1.860518777,1.916765525,1.968934444,2.016781776,2.060109658,2.098765817,2.132642948,2.16167779,2.185849904,2.205180153,2.219728869,2.2295937,2.234907144,2.235833767,2.232567138,2.2253265,2.214353232,2.199905902,2.182262864,2.161704969,2.138524662,2.113023423,2.085490286,2.0562195,2.025496648,1.993598182,1.960789092,1.927320937,1.89343024,1.859337259,1.825245107,1.791339209,1.757787065,1.724738292,1.692324905,1.660661815,1.629847495,1.599964788,1.571081817,1.543252982,1.516519998,1.490912963,1.466451429,1.44314546,1.420996665,1.399999187,1.380140651,1.361403047,1.343763564,1.327195355,1.311668242,1.297149359,1.283603728,1.270994782,1.25928483,1.248435461,1.23840791,1.229163362,1.220663228,1.212869374,1.20574431,1.199251356,1.19335477,1.188019859,1.183213059,1.178901998,1.175055543,1.171643828,1.16863827,1.167279219];
    var _htLMS_M_M=[86.45220101,86.86160934,87.65247282,88.42326434,89.17549228,89.91040853,90.62907762,91.33242379,92.02127167,92.69637946,93.35846546,94.00822923,94.64636981,95.27359106,95.91474929,96.54734328,97.17191309,97.78897727,98.3990283,99.00254338,99.599977,100.191764,100.7783198,101.3600411,101.9373058,102.5104735,103.0798852,103.645864,104.208713,104.7687256,105.3261638,105.8812823,106.4343146,106.9854769,107.534968,108.0829695,108.6296457,109.1751441,109.7195954,110.2631136,110.8057967,111.3477265,111.8889694,112.4295761,112.9695827,113.5090108,114.0478678,114.5861486,115.1238315,115.6608862,116.1972691,116.732925,117.2677879,117.8017819,118.3348215,118.8668123,119.397652,119.9272309,120.455433,120.9821362,121.5072136,122.0305342,122.5519634,123.0713645,123.588599,124.1035312,124.6160161,125.1259182,125.6331012,126.1374319,126.6387804,127.1370217,127.6320362,128.1237104,128.6119383,129.096622,129.5776723,130.0550101,130.5285669,130.9982857,131.4641218,131.9260439,132.3840348,132.838092,133.2882291,133.7344759,134.1768801,134.6155076,135.0504433,135.4817925,135.9096813,136.3342577,136.7556923,137.1741794,137.5899378,138.0032114,138.4142703,138.8234114,139.2309592,139.6372663,140.042714,140.4477127,140.8527022,141.2581515,141.6645592,142.072452,142.4823852,142.8949403,143.3107241,143.7303663,144.1545167,144.5838414,145.0190192,145.4607359,145.9096784,146.3665278,146.8319513,147.3065929,147.7910635,148.2859294,148.7917006,149.3088178,149.8376391,150.3784267,150.9313331,151.4963887,152.0734897,152.6623878,153.2626819,153.8738124,154.495058,155.1255365,155.7642086,156.4098858,157.0612415,157.7168289,158.3750929,159.034399,159.6930501,160.3493168,161.0014586,161.6477515,162.2865119,162.9161202,163.535045,164.1418486,164.7352199,165.3139755,165.8770715,166.4236087,166.9528354,167.4641466,167.9570814,168.4313175,168.8866644,169.3230548,169.7405351,170.139255,170.5194567,170.881464,171.2256717,171.5525345,171.8625576,172.1562865,172.4342983,172.6971935,172.9455898,173.180112,173.4013896,173.6100518,173.8067179,173.9919998,174.1664951,174.3307855,174.4854344,174.6309856,174.7679617,174.8968634,175.0181691,175.1323345,175.2397926,175.340954,175.4362071,175.5259191,175.6104358,175.690083,175.7651671,175.8359757,175.9027788,175.9658293,176.0253641,176.081605,176.1347593,176.1850208,176.2325707,176.2775781,176.3202008,176.3605864,176.3988725,176.4351874,176.469651,176.5023751,176.533464,176.5630153,176.5911197,176.6178621,176.6433219,176.6675729,176.6906844,176.712721,176.733743,176.753807,176.7729657,176.7912687,176.8087622,176.8254895,176.8414914,176.8492322];
    var _htLMS_M_S=[0.040321528,0.040395626,0.040577525,0.040723122,0.040833194,0.040909059,0.040952433,0.04096533,0.040949976,0.040908737,0.040844062,0.040758431,0.040654312,0.04053412,0.040572876,0.04061691,0.040666414,0.040721467,0.040782045,0.040848042,0.040919281,0.040995524,0.041076485,0.041161838,0.041251224,0.041344257,0.041440534,0.041539635,0.041641136,0.041744602,0.041849607,0.041955723,0.042062532,0.042169628,0.042276619,0.042383129,0.042488804,0.042593311,0.042696342,0.042797615,0.042896877,0.042993904,0.043088503,0.043180513,0.043269806,0.043356287,0.043439893,0.043520597,0.043598407,0.043673359,0.043745523,0.043815003,0.043881929,0.043946461,0.044008785,0.044069112,0.044127675,0.044184725,0.044240532,0.044295379,0.044349559,0.044403374,0.04445713,0.044511135,0.044565693,0.044621104,0.044677662,0.044735646,0.044795322,0.044856941,0.04492073,0.044986899,0.045055632,0.045127088,0.045201399,0.045278671,0.045358979,0.045442372,0.045528869,0.045618459,0.045711105,0.045806742,0.045905281,0.046006604,0.046110573,0.046217028,0.04632579,0.046436662,0.04654943,0.046663871,0.046779748,0.046896817,0.047014827,0.047133525,0.047252654,0.047371961,0.047491194,0.047610108,0.047728463,0.04784603,0.047962592,0.048077942,0.048191889,0.048304259,0.048414893,0.048523648,0.048630402,0.04873505,0.048837504,0.048937694,0.049035564,0.049131073,0.049224189,0.049314887,0.049403145,0.049488934,0.049572216,0.049652935,0.049731004,0.0498063,0.04987865,0.049947823,0.050013518,0.050075353,0.050132858,0.050185471,0.050232532,0.050273285,0.050306885,0.050332406,0.05034886,0.050355216,0.050350423,0.050333444,0.050303283,0.050259018,0.050199837,0.050125062,0.05003418,0.049926861,0.049802977,0.04966261,0.049506051,0.049333801,0.049146553,0.04894519,0.048730749,0.048504404,0.048267442,0.04802123,0.047767192,0.047506783,0.047241456,0.04697265,0.046701759,0.046430122,0.046159004,0.045889585,0.045622955,0.045360101,0.045101913,0.044849174,0.044602566,0.044362674,0.044129985,0.043904897,0.043687723,0.043478698,0.043277987,0.043085685,0.042901835,0.042726424,0.042559396,0.042400652,0.042250063,0.042107465,0.041972676,0.041845488,0.041725679,0.041613015,0.041507249,0.041408129,0.041315398,0.041228796,0.04114806,0.041072931,0.04100315,0.040938463,0.040878617,0.040823368,0.040772475,0.040725706,0.040682834,0.04064364,0.040607913,0.040575448,0.040546051,0.040519532,0.040495713,0.040474421,0.040455493,0.040438773,0.040424111,0.040411366,0.040400405,0.040391101,0.040383334,0.04037699,0.040371962,0.040368149,0.040365456,0.040363795,0.04036308,0.040363233,0.040364179,0.04036585,0.04036818,0.040369574];

    // BP Rosner spline coefficients (99 percentiles x 13 coefficients)
    var _bpCoeff_F_SYS=[
[-7.4855,-1.2252,1.2643,-6.8797,20.4744,0.7114,-0.0066,-0.0667,0.3564,-0.0012,0.5278,-0.6927,0.1388],
[8.4462,-0.9598,0.9046,-5.1098,15.1548,0.5919,-0.0029,-0.065,0.2495,-0.003,0.4421,-0.5724,0.0997],
[26.6223,-1.1479,1.2134,-8.4665,28.0408,0.475,0.0001,-0.0643,0.2062,-0.023,0.5561,-0.7467,0.185],
[31.8947,-0.867,1.1693,-8.2932,26.0849,0.4251,-0.0002,-0.0535,0.1718,-0.008,0.3954,-0.5402,0.1473],
[30.9472,-1.1288,1.5926,-11.7371,34.5934,0.4578,-0.0019,-0.0341,0.1144,-0.0167,0.6897,-1.0025,0.3867],
[23.152,-1.1368,1.751,-13.8556,41.2104,0.527,-0.0048,-0.0149,0.0623,0.0062,0.4347,-0.6509,0.2798],
[19.3036,-0.923,1.6566,-14.2294,42.9522,0.5494,-0.0062,-0.0051,0.0555,0.0242,0.1295,-0.1986,0.0876],
[20.0191,-1.0378,1.6928,-13.6476,40.8615,0.5596,-0.0071,0.0146,-0.03,0.0135,0.1632,-0.2423,0.1013],
[21.6515,-0.9745,1.5964,-13.0096,38.8309,0.5462,-0.0063,0.0087,-0.0183,0.0093,0.2644,-0.3848,0.1477],
[22.6952,-0.8665,1.4799,-11.8203,34.2277,0.537,-0.0066,0.0176,-0.0648,0.0046,0.3226,-0.4689,0.1811],
[23.1615,-0.8132,1.4422,-11.8893,34.8542,0.5329,-0.0063,0.013,-0.0367,0.008,0.34,-0.5072,0.2171],
[27.9,-0.8288,1.4257,-11.5803,33.7393,0.4995,-0.0049,0.0013,0.0117,-0.0014,0.4954,-0.7333,0.3051],
[34.8678,-0.801,1.429,-11.2835,32.3656,0.4469,-0.0037,-0.0037,0.0274,-0.0004,0.3936,-0.5873,0.251],
[37.7557,-0.9638,1.5603,-11.545,31.5671,0.4392,-0.0035,0.0024,-0.0164,-0.0087,0.395,-0.575,0.2238],
[39.9509,-1.0185,1.6189,-11.6485,31.009,0.4284,-0.0032,0.0051,-0.0452,-0.0101,0.3516,-0.5073,0.1906],
[40.8576,-0.9313,1.5386,-11.5031,31.8413,0.418,-0.0029,0.0019,-0.0291,-0.0081,0.3507,-0.5094,0.1968],
[42.1455,-0.9104,1.5356,-11.4411,31.5567,0.4098,-0.0029,0.0038,-0.0368,-0.006,0.2848,-0.4155,0.1642],
[44.0009,-1.0103,1.6565,-11.8711,31.8672,0.4038,-0.0026,0.0007,-0.0172,-0.0017,0.1877,-0.2802,0.1211],
[42.9483,-0.9479,1.6532,-12.4439,34.3937,0.4097,-0.0029,0.0023,-0.0231,-0.0003,0.1892,-0.2761,0.1077],
[43.4489,-0.9355,1.5751,-11.4463,30.9525,0.4076,-0.0027,0,-0.0199,0.0013,0.1619,-0.2376,0.0949],
[42.0432,-0.9668,1.5892,-11.2769,29.6658,0.4235,-0.003,0.0009,-0.0194,0.0051,0.1181,-0.1781,0.0784],
[43.3921,-0.9251,1.5125,-10.669,27.8566,0.4122,-0.0025,-0.0008,-0.0269,-0.0003,0.178,-0.2571,0.0962],
[43.1823,-0.9153,1.5502,-11.2058,29.7148,0.4154,-0.0028,0.0025,-0.0386,0.0053,0.0679,-0.0977,0.0352],
[43.5111,-0.8427,1.4724,-10.8634,29.5168,0.4107,-0.0027,0.0019,-0.0416,-0.0023,0.1644,-0.2282,0.0711],
[44.8115,-0.9195,1.5496,-10.7815,27.8384,0.4087,-0.003,0.012,-0.0908,-0.0063,0.1451,-0.1957,0.053],
[45.1153,-0.8419,1.4685,-10.4821,27.7389,0.404,-0.003,0.0148,-0.1094,-0.0047,0.1524,-0.2131,0.0715],
[45.0184,-0.9109,1.4637,-9.8769,25.3956,0.4124,-0.0031,0.0163,-0.1196,-0.0095,0.2128,-0.3015,0.1084],
[46.8396,-0.9336,1.4913,-10.0409,25.5791,0.4004,-0.0025,0.0087,-0.0854,-0.0083,0.207,-0.2945,0.1065],
[46.3627,-1.0691,1.6403,-10.8997,27.3749,0.4156,-0.003,0.0128,-0.0892,-0.006,0.1891,-0.2783,0.1168],
[46.056,-1.0253,1.6174,-10.8914,27.6133,0.4169,-0.0032,0.0134,-0.0831,-0.0015,0.1168,-0.1751,0.0794],
[45.8707,-1.0687,1.6929,-11.5282,29.3823,0.4234,-0.0035,0.0189,-0.1052,-0.002,0.0549,-0.0766,0.0279],
[46.225,-1.0493,1.6305,-11.0002,28.295,0.4212,-0.0032,0.015,-0.0892,0.001,0.0192,-0.0279,0.014],
[49.7043,-1.1168,1.6687,-10.6909,26.5418,0.4005,-0.0027,0.0175,-0.1166,-0.0029,-0.0064,0.0124,-0.0056],
[52.501,-1.2283,1.7174,-10.288,24.6009,0.39,-0.0025,0.0229,-0.1413,-0.0055,-0.0773,0.1151,-0.0428],
[52.638,-1.2668,1.7982,-10.7251,24.8323,0.393,-0.0027,0.0233,-0.1352,-0.0037,-0.1218,0.1797,-0.0678],
[52.9451,-1.2987,1.8214,-10.8739,25.4383,0.3952,-0.0028,0.0249,-0.1365,-0.0026,-0.1753,0.2588,-0.1002],
[51.6977,-1.2275,1.7723,-10.6355,24.5465,0.4024,-0.0032,0.0273,-0.1377,0.0023,-0.2334,0.3428,-0.1327],
[51.5803,-1.1856,1.7323,-10.549,24.7169,0.4027,-0.0033,0.029,-0.1504,0.004,-0.2752,0.4081,-0.1658],
[52.5542,-1.1951,1.7357,-10.3953,23.5706,0.3978,-0.0032,0.0312,-0.1661,0.0005,-0.2249,0.34,-0.1482],
[54.7146,-1.2604,1.8028,-10.773,24.4075,0.3869,-0.0029,0.0332,-0.1862,-0.002,-0.2181,0.3306,-0.1449],
[56.735,-1.199,1.8011,-11.3328,26.8609,0.3684,-0.0025,0.0319,-0.1874,0.0002,-0.2443,0.3686,-0.1611],
[57.7385,-1.2515,1.8588,-11.3519,25.8098,0.3657,-0.0024,0.0287,-0.1704,-0.0009,-0.2306,0.3502,-0.1567],
[57.7098,-1.257,1.9037,-11.8077,27.0173,0.3677,-0.0024,0.0271,-0.1572,-0.0012,-0.1965,0.298,-0.1324],
[58.0736,-1.2363,1.9353,-12.317,28.6066,0.3643,-0.0024,0.0253,-0.1507,0.002,-0.178,0.2641,-0.1092],
[62.0223,-1.2128,1.9237,-12.157,27.903,0.3343,-0.0016,0.0242,-0.1555,-0.0004,-0.21,0.315,-0.136],
[62.1221,-1.1404,1.8555,-11.839,27.3698,0.3308,-0.0017,0.026,-0.1685,-0.0024,-0.1452,0.2208,-0.0993],
[62.7962,-1.113,1.8421,-11.7266,26.7715,0.3253,-0.0016,0.0282,-0.1884,-0.0019,-0.1808,0.2766,-0.1276],
[61.7073,-1.2183,1.9323,-12.0462,26.8742,0.3435,-0.0022,0.0321,-0.2009,-0.0018,-0.1943,0.2958,-0.1342],
[61.7636,-1.1885,1.9597,-12.4946,27.9124,0.342,-0.0022,0.0308,-0.1956,0.003,-0.234,0.3493,-0.149],
[63.7493,-1.2055,1.96,-12.5069,28.0089,0.3283,-0.0012,0.0195,-0.1595,-0.002,-0.1708,0.2634,-0.1258],
[62.2586,-1.077,1.8646,-12.2702,27.8184,0.3328,-0.0012,0.0137,-0.1292,-0.0024,-0.0705,0.1151,-0.0646],
[64.2911,-1.0805,1.8431,-11.8647,26.3816,0.3191,-0.0007,0.0088,-0.1057,-0.007,-0.0325,0.0621,-0.0471],
[68.9778,-1.2187,1.888,-11.2553,23.9127,0.294,0.0003,0.0053,-0.0991,-0.0123,-0.0668,0.1121,-0.0648],
[70.4806,-1.165,1.8218,-10.7395,22.4622,0.2801,0.0009,0.0001,-0.0853,-0.0136,-0.0702,0.1225,-0.0781],
[70.6109,-1.1182,1.8262,-11.2854,24.8046,0.2768,0.001,-0.0007,-0.084,-0.01,-0.1092,0.1806,-0.1041],
[69.8975,-1.1611,1.8731,-11.7046,26.3452,0.287,0.0007,0.0018,-0.0954,-0.0067,-0.1524,0.2386,-0.1185],
[69.191,-1.1401,1.9015,-12.217,27.9129,0.2928,0.0003,0.0055,-0.111,-0.0035,-0.2103,0.3262,-0.1586],
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[-25.9772,2.0924,-3.8188,24.4956,-38.8551,0.3556,0.0003,-0.0543,0.1499,-0.0796,0.4423,-0.7299,0.2906],
[-16.9931,2.2497,-3.7873,23.1323,-35.1791,0.2916,0.0006,-0.0481,0.1416,-0.0641,0.3962,-0.6572,0.2638],
[-19.6683,2.3137,-3.7117,22.8638,-35.7152,0.3203,-0.0015,-0.0388,0.1406,-0.0689,0.4499,-0.7699,0.3469],
[-33.2858,2.7679,-4.0941,22.3138,-27.6548,0.3986,-0.0021,-0.0592,0.2053,-0.0938,0.6243,-1.0803,0.5056],
[-42.522,3.0229,-4.2155,22.1584,-27.6854,0.4632,-0.0051,-0.0392,0.1567,-0.0631,0.512,-0.8671,0.3759],
[-34.2517,2.7721,-3.6109,17.4453,-15.4161,0.4233,-0.0055,-0.0269,0.1286,-0.0371,0.366,-0.6077,0.2427],
[-42.4833,3.1554,-3.8233,16.9605,-12.0012,0.466,-0.0072,-0.0191,0.1105,-0.0294,0.3572,-0.5855,0.2225],
[-54.4375,3.0764,-3.5785,15.2542,-9.8518,0.569,-0.0112,-0.0014,0.0879,-0.034,0.4004,-0.6627,0.2631],
[-38.5925,2.3768,-3.1326,15.4931,-14.1216,0.5015,-0.0094,0.0059,0.0528,-0.0475,0.355,-0.5818,0.2245],
[-40.8119,2.5241,-3.3547,16.1453,-12.993,0.5119,-0.0092,0.0039,0.0554,-0.0504,0.3968,-0.6637,0.2771],
[-46.3014,2.6717,-3.5156,16.4588,-11.9729,0.5495,-0.0106,0.0106,0.0468,-0.0493,0.4299,-0.7314,0.3246],
[-47.6314,2.9586,-3.758,16.7192,-10.3567,0.5434,-0.0102,0.0067,0.0518,-0.0595,0.4837,-0.8241,0.3686],
[-41.6665,2.9392,-3.8754,17.5857,-10.8233,0.4983,-0.0073,-0.0149,0.0964,-0.0817,0.5737,-0.987,0.4563],
[-45.7369,2.9396,-3.8633,17.231,-10.561,0.5321,-0.008,-0.0146,0.1016,-0.0765,0.5824,-1.0084,0.4748],
[-51.929,2.9378,-3.7832,15.9238,-7.0752,0.586,-0.0101,-0.0013,0.0747,-0.0647,0.5498,-0.9515,0.4469],
[-45.8559,3.0516,-3.9216,17.0729,-10.1336,0.5356,-0.0086,-0.0063,0.0786,-0.0616,0.5196,-0.8956,0.415],
[-39.5605,2.8551,-3.5847,14.9465,-5.3128,0.5025,-0.0082,-0.003,0.0687,-0.0683,0.5134,-0.8848,0.4109],
[-33.7657,2.9223,-3.533,14.1257,-2.6863,0.4575,-0.0075,-0.0012,0.0596,-0.0664,0.4876,-0.8388,0.3872],
[-32.281,2.6018,-3.2278,12.8399,-0.8793,0.472,-0.0081,0.0063,0.0419,-0.062,0.4496,-0.7751,0.3605],
[-31.5797,2.3929,-2.9101,11.2038,1.5782,0.4845,-0.0091,0.0143,0.0265,-0.0586,0.4152,-0.712,0.3258],
[-32.2816,2.6349,-3.0487,11.5875,0.5188,0.4779,-0.0097,0.0203,0.0104,-0.044,0.3694,-0.6297,0.2818],
[-25.44,2.7183,-3.2535,13.5284,-4.0414,0.421,-0.007,0.0038,0.0396,-0.0469,0.3676,-0.6261,0.2792],
[-22.8873,2.5652,-3.2543,13.672,-3.1603,0.4141,-0.0056,-0.0066,0.0583,-0.0566,0.3787,-0.6382,0.2747],
[-20.7911,2.6849,-3.4699,14.9131,-5.2628,0.3921,-0.0042,-0.015,0.0686,-0.0663,0.3974,-0.6642,0.2789],
[-18.557,2.4292,-3.0989,12.2737,1.0228,0.3937,-0.0045,-0.0121,0.0655,-0.073,0.4005,-0.667,0.277],
[-17.5306,2.5085,-3.1093,11.7413,3.3022,0.3838,-0.0047,-0.009,0.0598,-0.0637,0.3744,-0.6243,0.2595],
[-14.3488,2.3673,-3.0068,11.4653,3.7471,0.3712,-0.004,-0.0129,0.0679,-0.0681,0.3759,-0.6244,0.2561],
[-16.6395,2.3516,-2.9622,11.2382,3.1551,0.3924,-0.0047,-0.0114,0.0678,-0.0675,0.3777,-0.6258,0.2543],
[-10.6475,2.2971,-2.8656,10.1755,7.4446,0.3509,-0.0034,-0.0169,0.0752,-0.0763,0.3958,-0.6548,0.2643],
[-10.0847,2.4662,-2.9361,10.2311,6.9534,0.3368,-0.0033,-0.0182,0.08,-0.073,0.3922,-0.6484,0.2607],
[-9.646,2.4037,-2.8587,10.171,5.6614,0.3398,-0.0036,-0.0141,0.0709,-0.0667,0.3688,-0.6116,0.2487],
[-5.5,2.2058,-2.7946,11.4006,-0.0691,0.3246,-0.003,-0.0129,0.0635,-0.0713,0.3492,-0.5757,0.231],
[-3.1184,2.0845,-2.7566,11.9122,-2.7527,0.3161,-0.0025,-0.0137,0.0596,-0.0779,0.347,-0.5661,0.2186],
[-1.8889,1.938,-2.5612,10.5284,0.4557,0.3178,-0.0027,-0.01,0.0505,-0.0868,0.3703,-0.6072,0.2401],
[1.3652,1.8159,-2.5509,11.3987,-2.5982,0.3031,-0.002,-0.0117,0.0496,-0.095,0.3856,-0.6354,0.2568],
[4.1129,1.8155,-2.5332,11.0415,-0.7368,0.2849,-0.0018,-0.0081,0.038,-0.0883,0.364,-0.6035,0.2493],
[1.4862,1.9999,-2.7504,12.2222,-3.4789,0.295,-0.0018,-0.0113,0.0461,-0.0881,0.3736,-0.6168,0.2503],
[-2.474,2.0859,-2.8319,12.5224,-3.8212,0.3229,-0.0028,-0.0094,0.0487,-0.086,0.392,-0.6551,0.2772],
[-0.415,1.9078,-2.6838,12.7489,-6.852,0.3217,-0.0029,-0.0082,0.0472,-0.0801,0.3635,-0.6077,0.2576],
[-0.0497,1.8113,-2.6253,12.8018,-7.7129,0.3277,-0.0029,-0.0071,0.0414,-0.0794,0.3497,-0.5807,0.2402],
[-1.5833,1.7827,-2.6894,13.4925,-9.1732,0.3439,-0.003,-0.0061,0.0371,-0.0845,0.3665,-0.6098,0.2548],
[1.209,1.7298,-2.6076,12.8518,-6.9268,0.3277,-0.0027,-0.0052,0.0323,-0.087,0.3703,-0.6203,0.2656],
[1.2834,1.6318,-2.5106,12.1368,-4.9164,0.335,-0.0025,-0.0086,0.0415,-0.0924,0.386,-0.6467,0.2773],
[-0.4438,1.6936,-2.4801,11.7414,-4.8147,0.3463,-0.0031,-0.0075,0.0435,-0.0895,0.3834,-0.6422,0.2749],
[-0.2325,1.613,-2.4272,12.1673,-8.1046,0.3529,-0.0033,-0.0065,0.0434,-0.0851,0.3606,-0.6019,0.2545],
[-2.1989,1.6982,-2.4926,12.7697,-10.7769,0.3643,-0.0037,-0.0061,0.0459,-0.0859,0.3821,-0.6441,0.2821],
[-0.8411,1.6919,-2.4301,12.0592,-8.667,0.3572,-0.004,-0.0005,0.0305,-0.0865,0.3748,-0.6317,0.2776],
[0.1678,1.6387,-2.3829,11.423,-6.0839,0.3552,-0.0038,-0.0004,0.0275,-0.0933,0.3894,-0.6552,0.2867],
[0.8079,1.7778,-2.4652,11.0582,-4.0097,0.3404,-0.0029,-0.0096,0.0477,-0.0928,0.4036,-0.6792,0.2963],
[-1.1219,1.8103,-2.4361,10.7708,-4.1791,0.3561,-0.0036,-0.0078,0.0484,-0.0819,0.3736,-0.6278,0.2717],
[-4.8133,1.8058,-2.331,9.8828,-2.9487,0.3871,-0.0049,-0.0019,0.0409,-0.0736,0.3513,-0.5879,0.2503],
[-8.1979,2.0298,-2.494,10.6089,-5.3076,0.4011,-0.0058,0.0028,0.0321,-0.0692,0.3504,-0.5851,0.247],
[-6.752,2.0613,-2.4814,10.131,-3.6573,0.3884,-0.0055,0.0002,0.0371,-0.0753,0.3769,-0.6294,0.2655],
[-3.566,1.8329,-2.2802,9.0883,-0.4962,0.3807,-0.005,-0.0007,0.0371,-0.081,0.3819,-0.6401,0.2738],
[1.0387,1.7975,-2.2844,9.2486,-0.6268,0.3494,-0.0037,-0.0064,0.0437,-0.0821,0.3621,-0.6004,0.2472],
[1.6962,1.5592,-2.1909,9.9497,-4.5187,0.3625,-0.0033,-0.0098,0.0505,-0.0904,0.364,-0.5976,0.2383],
[1.7174,1.6924,-2.3499,11.1189,-8.075,0.3556,-0.0029,-0.0144,0.0602,-0.0871,0.3514,-0.5716,0.2195],
[-1.1808,1.896,-2.4788,11.4555,-8.5302,0.3668,-0.0036,-0.0124,0.0586,-0.0775,0.3326,-0.5377,0.2006],
[-1.9286,1.8974,-2.4107,10.6569,-6.2357,0.3747,-0.0042,-0.0079,0.0509,-0.0731,0.3224,-0.5217,0.1951],
[-0.6762,1.6316,-2.0498,8.2301,-0.4293,0.3859,-0.0052,0.0017,0.0314,-0.0748,0.3067,-0.4907,0.1753],
[0.0177,1.3931,-1.7224,6.2104,3.67,0.398,-0.006,0.0074,0.0231,-0.0781,0.3064,-0.4907,0.1763],
[1.8242,1.4415,-1.8531,7.4867,0.3209,0.381,-0.0045,-0.0055,0.0517,-0.0808,0.3148,-0.504,0.181],
[3.3864,1.5296,-1.8957,8.1805,-2.714,0.3667,-0.0046,-0.0044,0.0516,-0.0669,0.2582,-0.4028,0.1272],
[1.4518,1.5557,-2.0588,9.891,-7.5275,0.3836,-0.0047,-0.0045,0.0515,-0.0676,0.2556,-0.3964,0.1218],
[-0.2228,1.7851,-2.3148,11.3445,-10.9345,0.3835,-0.0048,-0.0063,0.0572,-0.0663,0.2738,-0.4312,0.1425],
[-1.2686,1.848,-2.3626,11.0795,-8.9995,0.3885,-0.0049,-0.0053,0.0531,-0.0765,0.3143,-0.5003,0.1745],
[-1.1771,1.9498,-2.33,9.7844,-3.6954,0.382,-0.0052,-0.0022,0.0473,-0.0778,0.3354,-0.5421,0.202],
[-1.5905,1.9246,-2.2012,8.7588,-1.7051,0.39,-0.0063,0.0071,0.0279,-0.0723,0.315,-0.5067,0.1847],
[1.3907,1.7403,-1.9434,6.9646,2.6064,0.3789,-0.006,0.0072,0.0262,-0.0787,0.3279,-0.5282,0.1939],
[5.7059,1.724,-1.9265,7.7741,-2.061,0.3493,-0.0054,0.0068,0.0244,-0.0694,0.282,-0.4467,0.1515],
[12.6597,1.3459,-1.7148,8.837,-8.9553,0.3265,-0.0048,0.0144,-0.0045,-0.065,0.1958,-0.2892,0.0669],
[14.3993,1.3957,-1.9442,11.1527,-15.7051,0.3118,-0.0037,0.0089,-0.0004,-0.0745,0.2201,-0.3286,0.0822],
[17.6818,1.388,-1.9866,11.7883,-17.7697,0.2899,-0.0031,0.0095,-0.0089,-0.0708,0.1938,-0.2807,0.056],
[11.917,1.6817,-2.3045,13.3873,-21.1645,0.3206,-0.0046,0.0186,-0.0278,-0.0691,0.2114,-0.3145,0.0776],
[9.2777,1.6967,-2.2055,11.4045,-13.2029,0.3418,-0.0056,0.0253,-0.0412,-0.0758,0.2487,-0.3832,0.1165],
[5.8584,1.6874,-2.0515,9.5688,-8.1664,0.3719,-0.0073,0.0382,-0.0675,-0.0715,0.2508,-0.3923,0.1289],
[9.3245,1.5374,-1.8954,9.7989,-11.7858,0.3581,-0.0073,0.0413,-0.0754,-0.063,0.2057,-0.3147,0.0928],
[16.2286,1.2597,-1.7964,11.1013,-18.2966,0.3267,-0.0058,0.0385,-0.0835,-0.0656,0.1577,-0.2201,0.0326],
[15.2268,1.0841,-1.7857,12.168,-22.5467,0.3504,-0.0059,0.0373,-0.0777,-0.0718,0.1751,-0.253,0.0528],
[10.4724,1.4733,-2.2295,13.8392,-23.1801,0.3634,-0.0056,0.0276,-0.0497,-0.0848,0.2636,-0.4153,0.1436],
[5.2365,1.5165,-2.1802,12.4214,-17.9441,0.4039,-0.0071,0.0317,-0.0486,-0.0919,0.3179,-0.5147,0.1988],
[10.1259,1.4465,-1.9666,11.6878,-19.1724,0.3722,-0.0063,0.0273,-0.0379,-0.0743,0.2451,-0.3873,0.1349],
[8.7996,1.6042,-2.2123,13.8638,-26.1613,0.3767,-0.006,0.0209,-0.0216,-0.0624,0.2044,-0.3117,0.0907],
[7.3808,1.9753,-2.5467,14.6551,-24.7762,0.366,-0.0058,0.0184,-0.0173,-0.0685,0.2633,-0.4213,0.1535],
[8.2409,1.8093,-1.8703,8.5537,-10.4574,0.3742,-0.008,0.033,-0.0361,-0.0481,0.1904,-0.2951,0.0924],
[16.3443,1.4613,-1.5844,8.5531,-13.7014,0.3376,-0.0067,0.028,-0.0305,-0.0421,0.1473,-0.2208,0.0564],
[13.6814,1.7899,-2.0949,11.8906,-20.3017,0.3408,-0.0062,0.0239,-0.0268,-0.0499,0.1898,-0.2958,0.0953],
[-2.2305,2.0458,-2.0636,8.7608,-9.0684,0.4491,-0.0095,0.0277,-0.0118,-0.0522,0.2641,-0.4295,0.1659],
[7.1024,1.4245,-1.2884,5.4006,-5.1633,0.4266,-0.0107,0.0507,-0.0701,-0.0223,0.0801,-0.0982,-0.0105],
[22.5224,1.2411,-1.1587,5.4827,-6.229,0.3231,-0.008,0.0497,-0.0852,-0.035,0.0837,-0.1047,-0.0066],
[7.1688,2.0574,-2.1429,8.7073,-6.973,0.3913,-0.0079,0.0285,-0.027,-0.0746,0.3209,-0.5246,0.2072],
[10.9219,1.7121,-1.5447,6.0756,-5.588,0.3914,-0.0095,0.0458,-0.0634,-0.034,0.1515,-0.2269,0.0567],
[0.0292,1.3826,-1.5163,7.1831,-10.5716,0.5124,-0.0137,0.0821,-0.1555,-0.0443,0.1613,-0.2416,0.0645],
[-7.4708,1.924,-1.6304,5.8484,-7.4136,0.5394,-0.0152,0.0752,-0.1166,-0.0193,0.205,-0.3492,0.1599],
[17.4158,1.6902,-1.3304,3.6898,3.0431,0.3737,-0.0096,0.0478,-0.0772,-0.0183,0.131,-0.2054,0.0662],
[-2.725,3.8134,-2.3052,3.5243,8.0191,0.4042,-0.0133,0.0238,0.0586,0.0627,0.0422,-0.052,-0.018]
];

    function calcHeightPctile(age, sex, heightCm) {
      var idx = Math.max(0, Math.min(217, Math.round(age * 12) - 24));
      var L, M, S;
      if (sex === 'female') { L = _htLMS_F_L[idx]; M = _htLMS_F_M[idx]; S = _htLMS_F_S[idx]; }
      else { L = _htLMS_M_L[idx]; M = _htLMS_M_M[idx]; S = _htLMS_M_S[idx]; }
      var z = (Math.pow(heightCm / M, L) - 1) / (L * S);
      return { z: z, percentile: normalCDF(z) * 100 };
    }

    function computeBPPercentile(age, sex, heightCm, bpType, bpValue) {
      var t1, t2, t3, t4, t5, ta1, ta2, ta3, ta4, ta5, tb1, tb2, tb3, tb4, tb5, w;
      if (sex === 'female') {
        t1=106.7; t2=140.7; t3=154.0; t4=160.5; t5=168.9;
        ta1=5.00; ta2=10.70; ta3=13.16; ta4=14.51; ta5=17.33;
        tb1=6.701; tb2=16.438; tb3=46.80; tb4=84.46; tb5=203.608;
        w = (age - 10) * (heightCm - 147);
      } else {
        t1=107.8; t2=140.0; t3=154.5; t4=166.4; t5=179.1;
        ta1=5.06; ta2=10.79; ta3=13.22; ta4=14.51; ta5=17.30;
        tb1=-15; tb2=8.9; tb3=50.375; tb4=112.684; tb5=250.04;
        w = (age - 10) * (heightCm - 150);
      }

      var x = heightCm, y = age;

      // Height restricted cubic splines
      var x2a = Math.max(0, x - t1); var x2b = Math.max(0, x - t4); var x2c = Math.max(0, x - t5);
      var x2 = Math.pow(x2a,3) - Math.pow(x2b,3)*(t5-t1)/(t5-t4) + Math.pow(x2c,3)*(t4-t1)/(t5-t4);
      var x3a = Math.max(0, x - t2);
      var x3 = Math.pow(x3a,3) - Math.pow(x2b,3)*(t5-t2)/(t5-t4) + Math.pow(x2c,3)*(t4-t2)/(t5-t4);
      var x4a = Math.max(0, x - t3);
      var x4 = Math.pow(x4a,3) - Math.pow(x2b,3)*(t5-t3)/(t5-t4) + Math.pow(x2c,3)*(t4-t3)/(t5-t4);
      var x2s = x2/100, x3s = x3/100, x4s = x4/100;

      // Age restricted cubic splines
      var y2a = Math.max(0, y - ta1); var y2b = Math.max(0, y - ta4); var y2c = Math.max(0, y - ta5);
      var y2 = Math.pow(y2a,3) - Math.pow(y2b,3)*(ta5-ta1)/(ta5-ta4) + Math.pow(y2c,3)*(ta4-ta1)/(ta5-ta4);
      var y3a = Math.max(0, y - ta2);
      var y3 = Math.pow(y3a,3) - Math.pow(y2b,3)*(ta5-ta2)/(ta5-ta4) + Math.pow(y2c,3)*(ta4-ta2)/(ta5-ta4);
      var y4a = Math.max(0, y - ta3);
      var y4 = Math.pow(y4a,3) - Math.pow(y2b,3)*(ta5-ta3)/(ta5-ta4) + Math.pow(y2c,3)*(ta4-ta3)/(ta5-ta4);
      var y2s = y2/100, y3s = y3/100, y4s = y4/100;

      // Interaction restricted cubic splines
      var w2a = Math.max(0, w - tb1); var w2b = Math.max(0, w - tb4); var w2c = Math.max(0, w - tb5);
      var w2 = Math.pow(w2a,3) - Math.pow(w2b,3)*(tb5-tb1)/(tb5-tb4) + Math.pow(w2c,3)*(tb4-tb1)/(tb5-tb4);
      var w3a = Math.max(0, w - tb2);
      var w3 = Math.pow(w3a,3) - Math.pow(w2b,3)*(tb5-tb2)/(tb5-tb4) + Math.pow(w2c,3)*(tb4-tb2)/(tb5-tb4);
      var w4a = Math.max(0, w - tb3);
      var w4 = Math.pow(w4a,3) - Math.pow(w2b,3)*(tb5-tb3)/(tb5-tb4) + Math.pow(w2c,3)*(tb4-tb3)/(tb5-tb4);
      var w2s = w2/10000, w3s = w3/10000, w4s = w4/10000;

      // Select coefficient array
      var coeff;
      if (sex === 'female') coeff = (bpType === 'sys') ? _bpCoeff_F_SYS : _bpCoeff_F_DIA;
      else coeff = (bpType === 'sys') ? _bpCoeff_M_SYS : _bpCoeff_M_DIA;

      // Compute predicted BP at each percentile and find closest match
      var fxsys = new Array(99);
      for (var i = 0; i < 99; i++) {
        fxsys[i] = coeff[i][0] + coeff[i][5]*x + coeff[i][6]*x2s + coeff[i][7]*x3s + coeff[i][8]*x4s
                  + coeff[i][1]*y + coeff[i][2]*y2s + coeff[i][3]*y3s + coeff[i][4]*y4s
                  + coeff[i][9]*w + coeff[i][10]*w2s + coeff[i][11]*w3s + coeff[i][12]*w4s;
      }

      var minDiff = Infinity, percentile = 50;
      for (var i = 0; i < 99; i++) {
        var diff = Math.abs(bpValue - fxsys[i]);
        if (diff < minDiff) { minDiff = diff; percentile = i + 1; }
      }
      return { percentile: percentile, predicted: fxsys };
    }

    function classifyBPFromPercentiles(age, sysPctile, diaPctile, sys, dia) {
      var sysClass, diaClass;

      if (age >= 13) {
        // Ages >= 13: use absolute thresholds per AAP 2017
        if (sys >= 140)      sysClass = 'stage2';
        else if (sys >= 130) sysClass = 'stage1';
        else if (sys >= 120) sysClass = 'elevated';
        else                 sysClass = 'normal';

        if (dia >= 90)       diaClass = 'stage2';
        else if (dia >= 80)  diaClass = 'stage1';
        else                 diaClass = 'normal';
      } else {
        // Ages 1-<13: use percentile thresholds
        if (sysPctile >= 95 + 12 || sys >= 140) sysClass = 'stage2';
        else if (sysPctile >= 95 || sys >= 130)  sysClass = 'stage1';
        else if (sysPctile >= 90 || sys >= 120)  sysClass = 'elevated';
        else                                      sysClass = 'normal';

        if (diaPctile >= 95 + 12 || dia >= 90) diaClass = 'stage2';
        else if (diaPctile >= 95 || dia >= 80)  diaClass = 'stage1';
        else if (diaPctile >= 90)               diaClass = 'elevated';
        else                                     diaClass = 'normal';
      }

      var levels = { normal: 0, elevated: 1, stage1: 2, stage2: 3 };
      var overall = levels[sysClass] >= levels[diaClass] ? sysClass : diaClass;

      return { sysClass: sysClass, diaClass: diaClass, classification: overall };
    }

    var classLabels = {
      normal: { text: 'Normal', color: '#10b981', bg: '#d1fae5' },
      elevated: { text: 'Elevated', color: '#f59e0b', bg: '#fef3c7' },
      stage1: { text: 'Stage 1 Hypertension', color: '#f97316', bg: '#ffedd5' },
      stage2: { text: 'Stage 2 Hypertension', color: '#ef4444', bg: '#fee2e2' }
    };

    document.getElementById('btn-calc-bp').addEventListener('click', function() {
      var age = parseFloat(document.getElementById('bp-age').value);
      var sex = document.getElementById('bp-sex').value;
      var sys = parseFloat(document.getElementById('bp-systolic').value);
      var dia = parseFloat(document.getElementById('bp-diastolic').value);
      var heightCm = parseFloat(document.getElementById('bp-height').value);

      if (!age || !sex || !sys || !dia || !heightCm) { showToast('Fill in all fields including height', 'error'); return; }
      if (age < 1 || age > 17) { showToast('Age must be 1-17 years', 'error'); return; }

      var htResult = calcHeightPctile(age, sex, heightCm);
      var sysResult = computeBPPercentile(age, sex, heightCm, 'sys', sys);
      var diaResult = computeBPPercentile(age, sex, heightCm, 'dia', dia);

      var bpClass = classifyBPFromPercentiles(age, sysResult.percentile, diaResult.percentile, sys, dia);

      // Get 50th, 90th, 95th predicted values for display
      var sys50 = sysResult.predicted[49].toFixed(0), sys90 = sysResult.predicted[89].toFixed(0), sys95 = sysResult.predicted[94].toFixed(0);
      var dia50 = diaResult.predicted[49].toFixed(0), dia90 = diaResult.predicted[89].toFixed(0), dia95 = diaResult.predicted[94].toFixed(0);

      var cl = classLabels[bpClass.classification];
      var resultDiv = document.getElementById('bp-result');
      resultDiv.classList.remove('hidden');
      resultDiv.innerHTML =
        '<div class="calc-result-header" style="background:' + cl.bg + ';border-color:' + cl.color + ';">' +
          '<div style="font-size:18px;font-weight:700;color:' + cl.color + ';">' + cl.text + '</div>' +
          '<div style="font-size:13px;color:var(--g600);margin-top:4px;">' + sys + '/' + dia + ' mmHg &mdash; ' + age + ' year old ' + sex + ', ' + heightCm + ' cm</div>' +
        '</div>' +
        '<div class="calc-result-grid">' +
          '<div class="calc-result-item">' +
            '<div class="calc-result-label">Systolic</div>' +
            '<div class="calc-result-value">' + sysResult.percentile + '<span style="font-size:12px;">th %ile</span></div>' +
            '<div class="calc-result-sub" style="color:' + classLabels[bpClass.sysClass].color + ';">' + classLabels[bpClass.sysClass].text + '</div>' +
          '</div>' +
          '<div class="calc-result-item">' +
            '<div class="calc-result-label">Diastolic</div>' +
            '<div class="calc-result-value">' + diaResult.percentile + '<span style="font-size:12px;">th %ile</span></div>' +
            '<div class="calc-result-sub" style="color:' + classLabels[bpClass.diaClass].color + ';">' + classLabels[bpClass.diaClass].text + '</div>' +
          '</div>' +
          '<div class="calc-result-item">' +
            '<div class="calc-result-label">Height</div>' +
            '<div class="calc-result-value">' + Math.round(htResult.percentile) + '<span style="font-size:12px;">th %ile</span></div>' +
            '<div class="calc-result-sub">Z = ' + htResult.z.toFixed(2) + '</div>' +
          '</div>' +
          '<div class="calc-result-item">' +
            '<div class="calc-result-label">Reference (50th %ile)</div>' +
            '<div class="calc-result-value" style="font-size:16px;">' + sys50 + '/' + dia50 + '</div>' +
            '<div class="calc-result-sub">90th: ' + sys90 + '/' + dia90 + ' &bull; 95th: ' + sys95 + '/' + dia95 + '</div>' +
          '</div>' +
        '</div>' +
        '<p style="font-size:11px;color:var(--g400);margin:12px 0 0;">BCM/Rosner quantile regression percentiles adjusted to patient height. AAP 2017 classification.</p>';

      // Generate BP curves across ages 1-17 for this sex/height
      renderBPChart(age, sex, heightCm, sys, dia);
    });


    function renderBPChart(patientAge, sex, heightCm, patientSys, patientDia) {
      if (typeof Chart === 'undefined') return;
      var container = document.getElementById('bp-chart-container');
      if (!container) return;
      container.classList.remove('hidden');
      if (_chartInstances['bp-chart-canvas']) { _chartInstances['bp-chart-canvas'].destroy(); _chartInstances['bp-chart-canvas'] = null; }

      // Generate percentile curves across ages 1-17
      var sys50 = [], sys90 = [], sys95 = [], dia50 = [], dia90 = [], dia95 = [];
      for (var a = 1; a <= 17; a++) {
        var sr = computeBPPercentile(a, sex, heightCm, 'sys', 100);
        var dr = computeBPPercentile(a, sex, heightCm, 'dia', 60);
        sys50.push({x:a, y:Math.round(sr.predicted[49])}); sys90.push({x:a, y:Math.round(sr.predicted[89])}); sys95.push({x:a, y:Math.round(sr.predicted[94])});
        dia50.push({x:a, y:Math.round(dr.predicted[49])}); dia90.push({x:a, y:Math.round(dr.predicted[89])}); dia95.push({x:a, y:Math.round(dr.predicted[94])});
      }

      var datasets = [
        { label: 'SBP 95th', data: sys95, borderColor: 'rgba(239,68,68,0.7)', borderWidth: 2, borderDash: [4,4], pointRadius: 0, fill: false, tension: 0.3 },
        { label: 'SBP 90th', data: sys90, borderColor: 'rgba(249,115,22,0.6)', borderWidth: 1.5, borderDash: [3,3], pointRadius: 0, fill: false, tension: 0.3 },
        { label: 'SBP 50th', data: sys50, borderColor: 'rgba(16,185,129,0.8)', borderWidth: 2, pointRadius: 0, fill: false, tension: 0.3 },
        { label: 'DBP 95th', data: dia95, borderColor: 'rgba(239,68,68,0.4)', borderWidth: 1.5, borderDash: [4,4], pointRadius: 0, fill: false, tension: 0.3 },
        { label: 'DBP 90th', data: dia90, borderColor: 'rgba(249,115,22,0.3)', borderWidth: 1, borderDash: [3,3], pointRadius: 0, fill: false, tension: 0.3 },
        { label: 'DBP 50th', data: dia50, borderColor: 'rgba(16,185,129,0.4)', borderWidth: 1.5, pointRadius: 0, fill: false, tension: 0.3 },
        { label: 'Patient SBP', data: [{x:patientAge, y:patientSys}], backgroundColor: '#2563eb', borderColor: '#1d4ed8', pointRadius: 8, pointHoverRadius: 10, showLine: false, type: 'scatter', order: 0 },
        { label: 'Patient DBP', data: [{x:patientAge, y:patientDia}], backgroundColor: '#7c3aed', borderColor: '#6d28d9', pointRadius: 8, pointHoverRadius: 10, pointStyle: 'triangle', showLine: false, type: 'scatter', order: 0 }
      ];

      _chartInstances['bp-chart-canvas'] = new Chart(document.getElementById('bp-chart-canvas'), {
        type: 'line',
        data: { datasets: datasets },
        options: {
          responsive: true, maintainAspectRatio: true, aspectRatio: 1.6,
          animation: { duration: 300 },
          scales: {
            x: { type: 'linear', title: { display: true, text: 'Age (years)', font: { size: 12, weight: 'bold' } }, min: 1, max: 17, ticks: { stepSize: 1 }, grid: { color: 'rgba(0,0,0,0.05)' } },
            y: { title: { display: true, text: 'Blood Pressure (mmHg)', font: { size: 12, weight: 'bold' } }, min: 30, grid: { color: 'rgba(0,0,0,0.05)' } }
          },
          plugins: {
            legend: { display: true, position: 'bottom', labels: { font: { size: 10 }, usePointStyle: true } },
            tooltip: {
              callbacks: {
                label: function(ctx) {
                  if (ctx.dataset.label.indexOf('Patient') !== -1) return ctx.dataset.label + ': ' + ctx.parsed.y + ' mmHg';
                  return ctx.dataset.label + ': ' + ctx.parsed.y + ' mmHg at age ' + ctx.parsed.x;
                }
              }
            }
          }
        }
      });
    }

    document.getElementById('btn-clear-bp').addEventListener('click', function() {
      ['bp-age', 'bp-sex', 'bp-height', 'bp-systolic', 'bp-diastolic'].forEach(function(id) {
        var el = document.getElementById(id); if (el) el.value = '';
      });
      document.getElementById('bp-result').classList.add('hidden');
      var bpc = document.getElementById('bp-chart-container'); if (bpc) bpc.classList.add('hidden');
    });

    // ═══════════════════════════════════════════════════════════
    // BMI PERCENTILE — CDC 2000
    // ═══════════════════════════════════════════════════════════

    // CDC BMI-for-Age 24-240mo (every 3 months, from CDC bmiagerev.csv)
    var bmiLMS = {male:{24:{L:-1.982374,M:16.5478,S:0.080127},30:{L:-1.642107,M:16.2497,S:0.075499},36:{L:-1.419991,M:16.0003,S:0.072634},42:{L:-1.438165,M:15.7941,S:0.071495},48:{L:-1.714869,M:15.6282,S:0.071889},54:{L:-2.155348,M:15.5026,S:0.073491},60:{L:-2.615166,M:15.4191,S:0.075992},66:{L:-2.981797,M:15.3795,S:0.079211},72:{L:-3.211705,M:15.3835,S:0.083048},78:{L:-3.314769,M:15.429,S:0.0874},84:{L:-3.323189,M:15.5129,S:0.092131},90:{L:-3.270455,M:15.6317,S:0.097082},96:{L:-3.183058,M:15.7823,S:0.102091},102:{L:-3.079383,M:15.9617,S:0.107013},108:{L:-2.971148,M:16.1671,S:0.111721},114:{L:-2.865311,M:16.3961,S:0.116113},120:{L:-2.765648,M:16.6461,S:0.120112},126:{L:-2.673903,M:16.9151,S:0.123664},132:{L:-2.59056,M:17.2009,S:0.126735},138:{L:-2.51532,M:17.5014,S:0.129309},144:{L:-2.447426,M:17.8146,S:0.131389},150:{L:-2.385858,M:18.1387,S:0.132991},156:{L:-2.329457,M:18.4718,S:0.134141},162:{L:-2.277017,M:18.812,S:0.13488},168:{L:-2.227362,M:19.1576,S:0.135251},174:{L:-2.179426,M:19.5067,S:0.135309},180:{L:-2.132345,M:19.8577,S:0.13511},186:{L:-2.085574,M:20.2086,S:0.134718},192:{L:-2.039015,M:20.5576,S:0.134198},198:{L:-1.99315,M:20.9029,S:0.13362},204:{L:-1.949135,M:21.2425,S:0.133057},210:{L:-1.908831,M:21.5742,S:0.132585},216:{L:-1.87467,M:21.8959,S:0.132286},222:{L:-1.849323,M:22.2054,S:0.132249},228:{L:-1.835138,M:22.5007,S:0.132566},234:{L:-1.833401,M:22.7799,S:0.133339},240:{L:-1.843581,M:23.0414,S:0.134675}},female:{24:{L:-1.024497,M:16.388,S:0.085026},30:{L:-1.534542,M:16.0059,S:0.080932},36:{L:-2.096829,M:15.6992,S:0.078605},42:{L:-2.618733,M:15.4647,S:0.077904},48:{L:-3.018522,M:15.2985,S:0.078713},54:{L:-3.2593,M:15.1961,S:0.080904},60:{L:-3.350078,M:15.1519,S:0.0843},66:{L:-3.325522,M:15.1606,S:0.08868},72:{L:-3.225607,M:15.2169,S:0.093803},78:{L:-3.084291,M:15.3161,S:0.099427},84:{L:-2.926187,M:15.4536,S:0.105325},90:{L:-2.76731,M:15.6252,S:0.111295},96:{L:-2.617192,M:15.827,S:0.117159},102:{L:-2.480952,M:16.0552,S:0.122771},108:{L:-2.360921,M:16.3061,S:0.128014},114:{L:-2.257782,M:16.5763,S:0.132797},120:{L:-2.171296,M:16.8623,S:0.137057},126:{L:-2.100749,M:17.161,S:0.140754},132:{L:-2.045235,M:17.4691,S:0.143868},138:{L:-2.003802,M:17.7836,S:0.146399},144:{L:-1.975521,M:18.1015,S:0.148361},150:{L:-1.95952,M:18.42,S:0.149783},156:{L:-1.954978,M:18.7364,S:0.150705},162:{L:-1.9611,M:19.0481,S:0.151176},168:{L:-1.977074,M:19.3526,S:0.151256},174:{L:-2.002014,M:19.6475,S:0.15101},180:{L:-2.034893,M:19.9306,S:0.150512},186:{L:-2.07446,M:20.1998,S:0.149843},192:{L:-2.119157,M:20.4533,S:0.14909},198:{L:-2.167045,M:20.6891,S:0.148349},204:{L:-2.215738,M:20.9058,S:0.147723},210:{L:-2.262382,M:21.1016,S:0.147323},216:{L:-2.303688,M:21.2753,S:0.147269},222:{L:-2.336038,M:21.4255,S:0.147689},228:{L:-2.355678,M:21.5508,S:0.148724},234:{L:-2.35898,M:21.6501,S:0.150521},240:{L:-2.342797,M:21.7219,S:0.153241}}};

    function calcBMIPercentile(bmi, L, M, S) {
      // Z-score from LMS: Z = ((BMI/M)^L - 1) / (L * S)
      var z;
      if (Math.abs(L) < 0.001) {
        z = Math.log(bmi / M) / S;
      } else {
        z = (Math.pow(bmi / M, L) - 1) / (L * S);
      }
      // Convert Z to percentile using standard normal CDF approximation
      var p = normalCDF(z);
      return { z: z, percentile: Math.round(p * 1000) / 10 };
    }

    function normalCDF(z) {
      var a1=0.254829592, a2=-0.284496736, a3=1.421413741, a4=-1.453152027, a5=1.061405429, p=0.3275911;
      var sign = z < 0 ? -1 : 1;
      z = Math.abs(z) / Math.sqrt(2);
      var t = 1 / (1 + p * z);
      var y = 1 - (((((a5*t+a4)*t)+a3)*t+a2)*t+a1)*t*Math.exp(-z*z);
      return 0.5 * (1 + sign * y);
    }

    // ═══════════════════════════════════════════════════════════
    // CHART.JS GROWTH CURVE RENDERING
    // ═══════════════════════════════════════════════════════════

    // Inverse LMS: given Z-score, return measurement value
    function valueFromLMS(L, M, S, z) {
      if (Math.abs(L) < 0.001) return M * Math.exp(S * z);
      return M * Math.pow(1 + L * S * z, 1 / L);
    }

    var PERCENTILE_LINES = [
      { p: 3,  z: -1.88079, color: 'rgba(239,68,68,0.4)',  dash: [4,4], width: 1 },
      { p: 5,  z: -1.64485, color: 'rgba(249,115,22,0.4)', dash: [3,3], width: 1 },
      { p: 10, z: -1.28155, color: 'rgba(234,179,8,0.5)',  dash: [2,2], width: 1 },
      { p: 25, z: -0.67449, color: 'rgba(163,163,163,0.5)',dash: [2,2], width: 1 },
      { p: 50, z: 0,        color: 'rgba(16,185,129,0.9)', dash: [],    width: 2.5 },
      { p: 75, z: 0.67449,  color: 'rgba(163,163,163,0.5)',dash: [2,2], width: 1 },
      { p: 90, z: 1.28155,  color: 'rgba(234,179,8,0.5)',  dash: [2,2], width: 1 },
      { p: 95, z: 1.64485,  color: 'rgba(249,115,22,0.4)', dash: [3,3], width: 1 },
      { p: 97, z: 1.88079,  color: 'rgba(239,68,68,0.4)',  dash: [4,4], width: 1 }
    ];

    function generatePercentileCurves(lmsTable, percentileLines) {
      var ages = Object.keys(lmsTable).map(Number).sort(function(a,b){return a-b;});
      var datasets = [];
      percentileLines.forEach(function(pl, idx) {
        var points = [];
        ages.forEach(function(age) {
          var lms = lmsTable[age];
          var val = valueFromLMS(lms.L, lms.M, lms.S, pl.z);
          if (isFinite(val) && val > 0) points.push({ x: age, y: Math.round(val * 100) / 100 });
        });
        datasets.push({
          label: pl.p + 'th',
          data: points,
          borderColor: pl.color,
          borderWidth: pl.width,
          borderDash: pl.dash,
          pointRadius: 0,
          pointHoverRadius: 0,
          fill: false,
          tension: 0.4,
          order: 10
        });
      });
      // Add fill bands between symmetric percentiles (3-97, 5-95, 10-90, 25-75)
      // Use the 50th as center reference
      var fills = [
        { outer: 0, inner: 8, color: 'rgba(239,68,68,0.06)' },   // 3rd-97th
        { outer: 1, inner: 7, color: 'rgba(249,115,22,0.06)' },   // 5th-95th
        { outer: 2, inner: 6, color: 'rgba(234,179,8,0.06)' },    // 10th-90th
        { outer: 3, inner: 5, color: 'rgba(163,163,163,0.06)' }   // 25th-75th
      ];
      fills.forEach(function(f) {
        if (datasets[f.outer] && datasets[f.inner]) {
          datasets[f.outer].fill = { target: f.inner, above: f.color, below: f.color };
        }
      });
      return datasets;
    }

    var _chartInstances = {};

    function renderGrowthChart(canvasId, containerId, lmsTable, patientX, patientY, xLabel, yLabel, extraDatasets) {
      if (typeof Chart === 'undefined') return; // Chart.js not loaded yet

      var container = document.getElementById(containerId);
      if (!container) return;
      container.classList.remove('hidden');

      if (_chartInstances[canvasId]) { _chartInstances[canvasId].destroy(); _chartInstances[canvasId] = null; }

      var datasets = generatePercentileCurves(lmsTable, PERCENTILE_LINES);

      // Patient data point
      datasets.push({
        label: 'Patient',
        data: [{ x: patientX, y: patientY }],
        backgroundColor: '#2563eb',
        borderColor: '#1d4ed8',
        pointRadius: 8,
        pointHoverRadius: 10,
        pointStyle: 'circle',
        showLine: false,
        type: 'scatter',
        order: 0
      });

      if (extraDatasets) extraDatasets.forEach(function(d) { datasets.push(d); });

      _chartInstances[canvasId] = new Chart(document.getElementById(canvasId), {
        type: 'line',
        data: { datasets: datasets },
        options: {
          responsive: true,
          maintainAspectRatio: true,
          aspectRatio: 1.6,
          animation: { duration: 300 },
          scales: {
            x: {
              type: 'linear',
              title: { display: true, text: xLabel, font: { size: 12, weight: 'bold' } },
              grid: { color: 'rgba(0,0,0,0.05)' }
            },
            y: {
              title: { display: true, text: yLabel, font: { size: 12, weight: 'bold' } },
              grid: { color: 'rgba(0,0,0,0.05)' }
            }
          },
          plugins: {
            legend: { display: false },
            tooltip: {
              callbacks: {
                label: function(ctx) {
                  if (ctx.dataset.label === 'Patient') return 'Patient: ' + ctx.parsed.y.toFixed(1) + ' ' + yLabel.split('(').pop().replace(')', '');
                  return ctx.dataset.label + ': ' + ctx.parsed.y.toFixed(1);
                }
              }
            }
          }
        }
      });
    }

    // Mid-parental height calculation
    function calcMidParentalHeight(motherHt, fatherHt, sex) {
      if (!motherHt || !fatherHt) return null;
      var mph = sex === 'male' ? (motherHt + fatherHt + 13) / 2 : (motherHt + fatherHt - 13) / 2;
      return { target: mph, low: mph - 8.5, high: mph + 8.5 };
    }

    // Extended BMI classification per CDC 2022
    // Uses % of 95th percentile for severe obesity staging
    function classifyBMI(percentile, bmi, lms) {
      // Calculate 95th percentile BMI from LMS
      var p95z = 1.645; // Z for 95th percentile
      var bmi95;
      if (Math.abs(lms.L) < 0.001) bmi95 = lms.M * Math.exp(lms.S * p95z);
      else bmi95 = lms.M * Math.pow(1 + lms.L * lms.S * p95z, 1 / lms.L);

      var pctOf95 = (bmi / bmi95) * 100;

      if (percentile >= 95) {
        if (pctOf95 >= 140) return { text: 'Class 3 Severe Obesity', color: '#7f1d1d', bg: '#fecaca', pctOf95: pctOf95, bmi95: bmi95 };
        if (pctOf95 >= 120) return { text: 'Class 2 Severe Obesity', color: '#dc2626', bg: '#fee2e2', pctOf95: pctOf95, bmi95: bmi95 };
        return { text: 'Obese (Class 1)', color: '#ef4444', bg: '#fee2e2', pctOf95: pctOf95, bmi95: bmi95 };
      }
      if (percentile >= 85) return { text: 'Overweight', color: '#f97316', bg: '#ffedd5', pctOf95: pctOf95, bmi95: bmi95 };
      if (percentile >= 5)  return { text: 'Healthy Weight', color: '#10b981', bg: '#d1fae5', pctOf95: pctOf95, bmi95: bmi95 };
      return { text: 'Underweight', color: '#f59e0b', bg: '#fef3c7', pctOf95: pctOf95, bmi95: bmi95 };
    }

    document.getElementById('btn-calc-bmi').addEventListener('click', function() {
      var ageYr = parseFloat(document.getElementById('bmi-age-yr').value) || 0;
      var ageMo = parseInt(document.getElementById('bmi-age-mo').value) || 0;
      var age = ageYr + ageMo / 12;
      var sex = document.getElementById('bmi-sex').value;
      var weight = parseFloat(document.getElementById('bmi-weight').value);
      var height = parseFloat(document.getElementById('bmi-height').value);

      if (!age || !sex || !weight || !height) { showToast('Fill in all fields', 'error'); return; }
      if (age < 2 || age > 20) { showToast('Age must be 2-20 years', 'error'); return; }

      var bmi = weight / Math.pow(height / 100, 2);
      var ageMonths = Math.round(age * 12);
      if (ageMonths < 24) ageMonths = 24;
      if (ageMonths > 240) ageMonths = 240;
      var lms = interpolateLMS(bmiLMS[sex], ageMonths);
      if (!lms) { showToast('Invalid age/sex', 'error'); return; }

      var result = calcBMIPercentile(bmi, lms.L, lms.M, lms.S);
      var cl = classifyBMI(result.percentile, bmi, lms);

      var extendedInfo = '';
      if (result.percentile >= 85) {
        extendedInfo = '<div class="calc-result-item"><div class="calc-result-label">% of 95th</div><div class="calc-result-value" style="font-size:16px;">' + cl.pctOf95.toFixed(0) + '%</div><div class="calc-result-sub">95th = ' + cl.bmi95.toFixed(1) + ' kg/m&sup2;</div></div>';
      }

      var resultDiv = document.getElementById('bmi-result');
      resultDiv.classList.remove('hidden');
      resultDiv.innerHTML =
        '<div class="calc-result-header" style="background:' + cl.bg + ';border-color:' + cl.color + ';">' +
          '<div style="font-size:18px;font-weight:700;color:' + cl.color + ';">' + cl.text + '</div>' +
          '<div style="font-size:13px;color:var(--g600);margin-top:4px;">BMI ' + bmi.toFixed(1) + ' kg/m&sup2; &mdash; ' + result.percentile + 'th percentile' + (cl.pctOf95 && result.percentile >= 95 ? ' (' + cl.pctOf95.toFixed(0) + '% of 95th)' : '') + '</div>' +
        '</div>' +
        '<div class="calc-result-grid">' +
          '<div class="calc-result-item"><div class="calc-result-label">BMI</div><div class="calc-result-value">' + bmi.toFixed(1) + '</div><div class="calc-result-sub">kg/m&sup2;</div></div>' +
          '<div class="calc-result-item"><div class="calc-result-label">Percentile</div><div class="calc-result-value">' + result.percentile + '<span style="font-size:12px;">th</span></div></div>' +
          '<div class="calc-result-item"><div class="calc-result-label">Z-Score</div><div class="calc-result-value" style="font-size:16px;">' + result.z.toFixed(2) + '</div></div>' +
          extendedInfo +
        '</div>';
      var bmiYears = {}; Object.keys(bmiLMS[sex]).forEach(function(k) { bmiYears[+(k/12).toFixed(1)] = bmiLMS[sex][k]; });
      renderGrowthChart('bmi-chart-canvas', 'bmi-chart-container', bmiYears, +(ageMonths/12).toFixed(1), bmi, 'Age (years)', 'BMI (kg/m2)');
    });

    document.getElementById('btn-clear-bmi').addEventListener('click', function() {
      ['bmi-age-yr', 'bmi-sex', 'bmi-weight', 'bmi-height'].forEach(function(id) {
        var el = document.getElementById(id); if (el) el.value = '';
      });
      document.getElementById('bmi-result').classList.add('hidden');
    });

    // ═══════════════════════════════════════════════════════════
    // BODY SURFACE AREA — Mosteller
    // ═══════════════════════════════════════════════════════════

    document.getElementById('btn-calc-bsa').addEventListener('click', function() {
      var weight = parseFloat(document.getElementById('bsa-weight').value);
      var height = parseFloat(document.getElementById('bsa-height').value);
      if (!weight || !height) { showToast('Enter weight and height', 'error'); return; }

      var bsa = Math.sqrt(height * weight / 3600);
      var resultDiv = document.getElementById('bsa-result');
      resultDiv.classList.remove('hidden');
      resultDiv.innerHTML =
        '<div class="calc-result-header" style="background:#e0f2fe;border-color:#0ea5e9;">' +
          '<div style="font-size:18px;font-weight:700;color:#0369a1;">BSA: ' + bsa.toFixed(3) + ' m&sup2;</div>' +
          '<div style="font-size:13px;color:var(--g600);margin-top:4px;">' + weight + ' kg, ' + height + ' cm (Mosteller formula)</div>' +
        '</div>';
    });

    document.getElementById('btn-clear-bsa').addEventListener('click', function() {
      ['bsa-weight', 'bsa-height'].forEach(function(id) {
        var el = document.getElementById(id); if (el) el.value = '';
      });
      document.getElementById('bsa-result').classList.add('hidden');
    });

    // ═══════════════════════════════════════════════════════════
    // WEIGHT-BASED DOSING
    // ═══════════════════════════════════════════════════════════

    document.getElementById('btn-calc-dose').addEventListener('click', function() {
      var weight = parseFloat(document.getElementById('dose-weight').value);
      var dosePerKg = parseFloat(document.getElementById('dose-per-kg').value);
      var freq = parseInt(document.getElementById('dose-freq').value);
      var maxDose = parseFloat(document.getElementById('dose-max').value) || 0;
      var conc = parseFloat(document.getElementById('dose-conc').value) || 0;

      if (!weight || !dosePerKg) { showToast('Enter weight and dose', 'error'); return; }

      var singleDose = weight * dosePerKg;
      var capped = false;
      if (maxDose > 0 && singleDose > maxDose) { singleDose = maxDose; capped = true; }
      var dailyDose = singleDose * freq;

      var rows = '<div class="calc-result-item"><div class="calc-result-label">Single Dose</div><div class="calc-result-value">' + singleDose.toFixed(1) + ' <span style="font-size:12px;">mg</span></div>'
        + (capped ? '<div class="calc-result-sub" style="color:var(--red);">Capped at max ' + maxDose + ' mg</div>' : '') + '</div>'
        + '<div class="calc-result-item"><div class="calc-result-label">Daily Total</div><div class="calc-result-value">' + dailyDose.toFixed(1) + ' <span style="font-size:12px;">mg/day</span></div>'
        + '<div class="calc-result-sub">' + singleDose.toFixed(1) + ' mg x ' + freq + '/day</div></div>';

      if (conc > 0) {
        var vol = singleDose / conc;
        rows += '<div class="calc-result-item"><div class="calc-result-label">Volume per Dose</div><div class="calc-result-value">' + vol.toFixed(1) + ' <span style="font-size:12px;">mL</span></div>'
          + '<div class="calc-result-sub">at ' + conc + ' mg/mL</div></div>';
      }

      var resultDiv = document.getElementById('dose-result');
      resultDiv.classList.remove('hidden');
      resultDiv.innerHTML =
        '<div class="calc-result-header" style="background:#ede9fe;border-color:#7c3aed;">' +
          '<div style="font-size:18px;font-weight:700;color:#6d28d9;">' + singleDose.toFixed(1) + ' mg per dose</div>' +
          '<div style="font-size:13px;color:var(--g600);margin-top:4px;">' + weight + ' kg x ' + dosePerKg + ' mg/kg' + (capped ? ' (max ' + maxDose + ' mg)' : '') + '</div>' +
        '</div>' +
        '<div class="calc-result-grid">' + rows + '</div>' +
        '<p style="font-size:11px;color:var(--g400);margin:12px 0 0;">Always verify dosing against your formulary and institutional guidelines.</p>';
    });

    document.getElementById('btn-clear-dose').addEventListener('click', function() {
      ['dose-weight', 'dose-per-kg', 'dose-max', 'dose-conc'].forEach(function(id) {
        var el = document.getElementById(id); if (el) el.value = '';
      });
      document.getElementById('dose-freq').value = '1';
      document.getElementById('dose-result').classList.add('hidden');
    });

    // ═══════════════════════════════════════════════════════════
    // GROWTH CHARTS — WHO 0-2y / CDC 2-20y + Fenton Preterm
    // ═══════════════════════════════════════════════════════════

    var currentGrowthType = 'wfa';

    // WHO Weight-for-Age 0-60mo (monthly, from WHO Anthro daily LMS)
    var wfaLMS = {male:{0:{L:0.3487,M:3.3464,S:0.14602},1:{L:0.2303,M:4.4525,S:0.13413},2:{L:0.1969,M:5.5714,S:0.12382},3:{L:0.174,M:6.369,S:0.11732},4:{L:0.1551,M:7.0069,S:0.11313},5:{L:0.1396,M:7.5077,S:0.11081},6:{L:0.1256,M:7.9389,S:0.10957},7:{L:0.1134,M:8.2963,S:0.10902},8:{L:0.1019,M:8.62,S:0.10882},9:{L:0.0917,M:8.9019,S:0.10881},10:{L:0.0821,M:9.1618,S:0.1089},11:{L:0.0729,M:9.4136,S:0.10906},12:{L:0.0645,M:9.646,S:0.10925},13:{L:0.0563,M:9.8772,S:0.10949},14:{L:0.0487,M:10.0944,S:0.10976},15:{L:0.0412,M:10.3139,S:0.11008},16:{L:0.0343,M:10.5228,S:0.11041},17:{L:0.0276,M:10.7289,S:0.11078},18:{L:0.021,M:10.9393,S:0.1112},19:{L:0.0149,M:11.1409,S:0.11163},20:{L:0.0087,M:11.3478,S:0.11212},21:{L:0.0029,M:11.5474,S:0.11261},22:{L:-0.0029,M:11.7528,S:0.11315},23:{L:-0.0083,M:11.951,S:0.11369},24:{L:-0.0136,M:12.1482,S:0.11425},25:{L:-0.0189,M:12.3506,S:0.11485},26:{L:-0.0239,M:12.5442,S:0.11544},27:{L:-0.0289,M:12.7413,S:0.11604},28:{L:-0.0337,M:12.9288,S:0.11663},29:{L:-0.0385,M:13.1188,S:0.11723},30:{L:-0.0431,M:13.2993,S:0.11781},31:{L:-0.0477,M:13.4824,S:0.1184},32:{L:-0.052,M:13.6567,S:0.11896},33:{L:-0.0563,M:13.8285,S:0.11952},34:{L:-0.0607,M:14.0038,S:0.12008},35:{L:-0.0648,M:14.1719,S:0.12062},36:{L:-0.0689,M:14.3443,S:0.12116},37:{L:-0.0729,M:14.5102,S:0.12168},38:{L:-0.0769,M:14.6811,S:0.12221},39:{L:-0.0808,M:14.8462,S:0.12271},40:{L:-0.0846,M:15.0167,S:0.12323},41:{L:-0.0883,M:15.1816,S:0.12373},42:{L:-0.092,M:15.3465,S:0.12424},43:{L:-0.0957,M:15.5168,S:0.12478},44:{L:-0.0992,M:15.6815,S:0.12531},45:{L:-0.1028,M:15.8514,S:0.12587},46:{L:-0.1063,M:16.0156,S:0.12642},47:{L:-0.1098,M:16.1851,S:0.12701},48:{L:-0.1131,M:16.3489,S:0.12759},49:{L:-0.1164,M:16.5126,S:0.12818},50:{L:-0.1198,M:16.6818,S:0.12881},51:{L:-0.123,M:16.8454,S:0.12942},52:{L:-0.1263,M:17.0145,S:0.13006},53:{L:-0.1294,M:17.1782,S:0.13068},54:{L:-0.1326,M:17.3473,S:0.13133},55:{L:-0.1356,M:17.5107,S:0.13196},56:{L:-0.1387,M:17.674,S:0.1326},57:{L:-0.1417,M:17.8425,S:0.13325},58:{L:-0.1447,M:18.0053,S:0.13389},59:{L:-0.1477,M:18.1732,S:0.13454},60:{L:-0.1506,M:18.3352,S:0.13517}},female:{0:{L:0.3809,M:3.2322,S:0.14171},1:{L:0.1727,M:4.1716,S:0.13738},2:{L:0.0959,M:5.1315,S:0.12998},3:{L:0.0407,M:5.8393,S:0.12622},4:{L:-0.0053,M:6.428,S:0.12401},5:{L:-0.0428,M:6.8959,S:0.12274},6:{L:-0.0759,M:7.3016,S:0.12204},7:{L:-0.1039,M:7.6416,S:0.12178},8:{L:-0.1292,M:7.9534,S:0.12181},9:{L:-0.1507,M:8.2259,S:0.12199},10:{L:-0.1698,M:8.4769,S:0.12222},11:{L:-0.1873,M:8.7207,S:0.12247},12:{L:-0.2022,M:8.9462,S:0.12267},13:{L:-0.216,M:9.1722,S:0.12283},14:{L:-0.2277,M:9.3861,S:0.12294},15:{L:-0.2385,M:9.6038,S:0.12299},16:{L:-0.2478,M:9.8124,S:0.12303},17:{L:-0.2561,M:10.0196,S:0.12305},18:{L:-0.2637,M:10.2324,S:0.12309},19:{L:-0.2702,M:10.4372,S:0.12315},20:{L:-0.2763,M:10.6481,S:0.12324},21:{L:-0.2814,M:10.8521,S:0.12335},22:{L:-0.2862,M:11.0633,S:0.12351},23:{L:-0.2903,M:11.2684,S:0.12369},24:{L:-0.294,M:11.4741,S:0.12389},25:{L:-0.2975,M:11.6868,S:0.12414},26:{L:-0.3005,M:11.8922,S:0.12441},27:{L:-0.3033,M:12.1028,S:0.12472},28:{L:-0.3057,M:12.3042,S:0.12506},29:{L:-0.308,M:12.5093,S:0.12545},30:{L:-0.3101,M:12.7047,S:0.12587},31:{L:-0.312,M:12.9033,S:0.12634},32:{L:-0.3138,M:13.093,S:0.12683},33:{L:-0.3155,M:13.2809,S:0.12736},34:{L:-0.3171,M:13.4739,S:0.12794},35:{L:-0.3186,M:13.6599,S:0.12854},36:{L:-0.3201,M:13.8518,S:0.1292},37:{L:-0.3216,M:14.0373,S:0.12987},38:{L:-0.323,M:14.2288,S:0.1306},39:{L:-0.3243,M:14.4136,S:0.13134},40:{L:-0.3257,M:14.6041,S:0.13214},41:{L:-0.327,M:14.7877,S:0.13294},42:{L:-0.3283,M:14.9704,S:0.13375},43:{L:-0.3296,M:15.1584,S:0.13461},44:{L:-0.3309,M:15.3395,S:0.13544},45:{L:-0.3322,M:15.5259,S:0.13631},46:{L:-0.3335,M:15.7056,S:0.13715},47:{L:-0.3348,M:15.8908,S:0.13801},48:{L:-0.3361,M:16.0697,S:0.13884},49:{L:-0.3374,M:16.2485,S:0.13967},50:{L:-0.3387,M:16.433,S:0.14051},51:{L:-0.34,M:16.6114,S:0.14132},52:{L:-0.3414,M:16.7957,S:0.14214},53:{L:-0.3427,M:16.9737,S:0.14292},54:{L:-0.344,M:17.1573,S:0.14372},55:{L:-0.3453,M:17.3344,S:0.14448},56:{L:-0.3466,M:17.5107,S:0.14524},57:{L:-0.3479,M:17.692,S:0.146},58:{L:-0.3492,M:17.8664,S:0.14674},59:{L:-0.3505,M:18.0456,S:0.14749},60:{L:-0.3518,M:18.2179,S:0.14821}}};

    // CDC Weight-for-Age 24-240mo (every 6 months)
    var cdcWfaLMS = {male:{24:{L:-0.216501,M:12.7415,S:0.108166},30:{L:-0.397568,M:13.5609,S:0.109378},36:{L:-0.62132,M:14.4026,S:0.111875},42:{L:-0.804515,M:15.3194,S:0.115493},48:{L:-0.915242,M:16.3168,S:0.119955},54:{L:-0.969633,M:17.3791,S:0.124879},60:{L:-1.000454,M:18.4859,S:0.129879},66:{L:-1.035044,M:19.6214,S:0.134676},72:{L:-1.087471,M:20.7777,S:0.139143},78:{L:-1.158132,M:21.9564,S:0.14331},84:{L:-1.236497,M:23.1674,S:0.147337},90:{L:-1.306268,M:24.4265,S:0.151472},96:{L:-1.351813,M:25.7526,S:0.155974},102:{L:-1.363458,M:27.1649,S:0.161026},108:{L:-1.339405,M:28.6813,S:0.166659},114:{L:-1.284375,M:30.3177,S:0.172729},120:{L:-1.206688,M:32.088,S:0.178929},126:{L:-1.115543,M:34.0036,S:0.184847},132:{L:-1.019277,M:36.0726,S:0.19003},138:{L:-0.92467,M:38.2978,S:0.194053},144:{L:-0.836962,M:40.6744,S:0.196592},150:{L:-0.760274,M:43.1883,S:0.197464},156:{L:-0.698166,M:45.8134,S:0.196662},162:{L:-0.654143,M:48.5111,S:0.194344},168:{L:-0.631877,M:51.231,S:0.190808},174:{L:-0.634919,M:53.9126,S:0.186442},180:{L:-0.665609,M:56.491,S:0.181666},186:{L:-0.723218,M:58.9029,S:0.176887},192:{L:-0.801993,M:61.0954,S:0.172459},198:{L:-0.890436,M:63.0323,S:0.168655},204:{L:-0.973245,M:64.6996,S:0.16564},210:{L:-1.035402,M:66.1075,S:0.163439},216:{L:-1.066224,M:67.2899,S:0.161923},222:{L:-1.061342,M:68.3,S:0.16087},228:{L:-1.023292,M:69.1947,S:0.160138},234:{L:-0.964377,M:69.9987,S:0.160007},240:{L:-0.916488,M:70.5976,S:0.161477}},female:{24:{L:-0.752207,M:12.1346,S:0.10774},30:{L:-0.914719,M:13.0436,S:0.113023},36:{L:-1.024471,M:13.9411,S:0.119492},42:{L:-1.107022,M:14.8812,S:0.125973},48:{L:-1.17703,M:15.8782,S:0.131802},54:{L:-1.238331,M:16.9283,S:0.136811},60:{L:-1.287692,M:18.0231,S:0.141191},66:{L:-1.318993,M:19.1583,S:0.145317},72:{L:-1.326764,M:20.3364,S:0.14959},78:{L:-1.308487,M:21.5675,S:0.154326},84:{L:-1.265549,M:22.868,S:0.159693},90:{L:-1.202884,M:24.2579,S:0.165689},96:{L:-1.127684,M:25.757,S:0.172147},102:{L:-1.047847,M:27.382,S:0.178774},108:{L:-0.970686,M:29.1429,S:0.185201},114:{L:-0.902198,M:31.0403,S:0.191041},120:{L:-0.846873,M:33.0639,S:0.195947},126:{L:-0.807873,M:35.1918,S:0.199648},132:{L:-0.787374,M:37.3909,S:0.201971},138:{L:-0.786904,M:39.6191,S:0.202848},144:{L:-0.8076,M:41.828,S:0.202299},150:{L:-0.850307,M:43.9661,S:0.200419},156:{L:-0.915514,M:45.9837,S:0.197363},162:{L:-1.003051,M:47.8366,S:0.19333},168:{L:-1.111606,M:49.4908,S:0.18856},174:{L:-1.238005,M:50.9254,S:0.183328},180:{L:-1.376478,M:52.1357,S:0.177947},186:{L:-1.518156,M:53.1333,S:0.172761},192:{L:-1.651248,M:53.9454,S:0.168125},198:{L:-1.762241,M:54.6122,S:0.164368},204:{L:-1.838092,M:55.1822,S:0.161753},210:{L:-1.868977,M:55.7062,S:0.160423},216:{L:-1.850946,M:56.2297,S:0.16037},222:{L:-1.787979,M:56.7803,S:0.161399},228:{L:-1.693267,M:57.3518,S:0.163138},234:{L:-1.589533,M:57.8833,S:0.165088},240:{L:-1.513362,M:58.219,S:0.166645}}};

    // WHO Length/Height-for-Age 0-60mo (monthly)
    var lfaLMS = {male:{0:{L:1.0,M:49.8842,S:0.03795},1:{L:1.0,M:54.6645,S:0.03559},2:{L:1.0,M:58.4384,S:0.03423},3:{L:1.0,M:61.4013,S:0.03329},4:{L:1.0,M:63.9041,S:0.03257},5:{L:1.0,M:65.8912,S:0.03204},6:{L:1.0,M:67.6435,S:0.03165},7:{L:1.0,M:69.1615,S:0.03139},8:{L:1.0,M:70.6224,S:0.03124},9:{L:1.0,M:71.9714,S:0.03117},10:{L:1.0,M:73.2653,S:0.03118},11:{L:1.0,M:74.5464,S:0.03125},12:{L:1.0,M:75.7391,S:0.03137},13:{L:1.0,M:76.9304,S:0.03154},14:{L:1.0,M:78.0451,S:0.03174},15:{L:1.0,M:79.1613,S:0.03197},16:{L:1.0,M:80.2113,S:0.03222},17:{L:1.0,M:81.234,S:0.03249},18:{L:1.0,M:82.2628,S:0.03279},19:{L:1.0,M:83.2318,S:0.0331},20:{L:1.0,M:84.2074,S:0.03342},21:{L:1.0,M:85.1291,S:0.03375},22:{L:1.0,M:86.0589,S:0.0341},23:{L:1.0,M:86.9392,S:0.03445},24:{L:1.0,M:87.8018,S:0.03479},25:{L:1.0,M:87.9737,S:0.03542},26:{L:1.0,M:88.7964,S:0.03576},27:{L:1.0,M:89.6247,S:0.0361},28:{L:1.0,M:90.4056,S:0.03642},29:{L:1.0,M:91.1906,S:0.03674},30:{L:1.0,M:91.9297,S:0.03704},31:{L:1.0,M:92.6735,S:0.03733},32:{L:1.0,M:93.3753,S:0.03761},33:{L:1.0,M:94.0612,S:0.03787},34:{L:1.0,M:94.7559,S:0.03812},35:{L:1.0,M:95.4168,S:0.03836},36:{L:1.0,M:96.0889,S:0.03858},37:{L:1.0,M:96.7298,S:0.03879},38:{L:1.0,M:97.3827,S:0.039},39:{L:1.0,M:98.006,S:0.03919},40:{L:1.0,M:98.6412,S:0.03937},41:{L:1.0,M:99.2471,S:0.03954},42:{L:1.0,M:99.8441,S:0.0397},43:{L:1.0,M:100.4522,S:0.03986},44:{L:1.0,M:101.0326,S:0.04002},45:{L:1.0,M:101.6246,S:0.04017},46:{L:1.0,M:102.191,S:0.04031},47:{L:1.0,M:102.7706,S:0.04045},48:{L:1.0,M:103.3273,S:0.04059},49:{L:1.0,M:103.8806,S:0.04073},50:{L:1.0,M:104.4496,S:0.04086},51:{L:1.0,M:104.9984,S:0.041},52:{L:1.0,M:105.5641,S:0.04113},53:{L:1.0,M:106.1104,S:0.04126},54:{L:1.0,M:106.6736,S:0.04139},55:{L:1.0,M:107.2176,S:0.04152},56:{L:1.0,M:107.7607,S:0.04165},57:{L:1.0,M:108.3209,S:0.04177},58:{L:1.0,M:108.8621,S:0.0419},59:{L:1.0,M:109.4203,S:0.04202},60:{L:1.0,M:109.9593,S:0.04214}},female:{0:{L:1.0,M:49.1477,S:0.0379},1:{L:1.0,M:53.6326,S:0.03641},2:{L:1.0,M:57.0796,S:0.03568},3:{L:1.0,M:59.7773,S:0.0352},4:{L:1.0,M:62.1071,S:0.03486},5:{L:1.0,M:64.019,S:0.03463},6:{L:1.0,M:65.751,S:0.03448},7:{L:1.0,M:67.2842,S:0.03441},8:{L:1.0,M:68.7732,S:0.0344},9:{L:1.0,M:70.1463,S:0.03444},10:{L:1.0,M:71.4656,S:0.03452},11:{L:1.0,M:72.7788,S:0.03464},12:{L:1.0,M:74.0049,S:0.03479},13:{L:1.0,M:75.2297,S:0.03496},14:{L:1.0,M:76.377,S:0.03514},15:{L:1.0,M:77.5258,S:0.03534},16:{L:1.0,M:78.6055,S:0.03555},17:{L:1.0,M:79.6559,S:0.03576},18:{L:1.0,M:80.7121,S:0.03598},19:{L:1.0,M:81.708,S:0.0362},20:{L:1.0,M:82.7116,S:0.03643},21:{L:1.0,M:83.6595,S:0.03665},22:{L:1.0,M:84.6154,S:0.03689},23:{L:1.0,M:85.5184,S:0.03711},24:{L:1.0,M:86.4008,S:0.03733},25:{L:1.0,M:86.5922,S:0.03786},26:{L:1.0,M:87.4358,S:0.03808},27:{L:1.0,M:88.2881,S:0.0383},28:{L:1.0,M:89.0938,S:0.03851},29:{L:1.0,M:89.9072,S:0.03872},30:{L:1.0,M:90.6765,S:0.03893},31:{L:1.0,M:91.4539,S:0.03913},32:{L:1.0,M:92.1906,S:0.03933},33:{L:1.0,M:92.9135,S:0.03952},34:{L:1.0,M:93.6473,S:0.03971},35:{L:1.0,M:94.346,S:0.03989},36:{L:1.0,M:95.0572,S:0.04007},37:{L:1.0,M:95.7356,S:0.04024},38:{L:1.0,M:96.427,S:0.04041},39:{L:1.0,M:97.0871,S:0.04057},40:{L:1.0,M:97.7601,S:0.04074},41:{L:1.0,M:98.4028,S:0.04089},42:{L:1.0,M:99.0369,S:0.04105},43:{L:1.0,M:99.6834,S:0.0412},44:{L:1.0,M:100.3007,S:0.04135},45:{L:1.0,M:100.9301,S:0.0415},46:{L:1.0,M:101.5312,S:0.04164},47:{L:1.0,M:102.1446,S:0.04179},48:{L:1.0,M:102.7312,S:0.04193},49:{L:1.0,M:103.3113,S:0.04206},50:{L:1.0,M:103.9045,S:0.0422},51:{L:1.0,M:104.4727,S:0.04233},52:{L:1.0,M:105.0541,S:0.04247},53:{L:1.0,M:105.6114,S:0.04259},54:{L:1.0,M:106.1817,S:0.04272},55:{L:1.0,M:106.7284,S:0.04285},56:{L:1.0,M:107.2698,S:0.04297},57:{L:1.0,M:107.8238,S:0.0431},58:{L:1.0,M:108.3547,S:0.04322},59:{L:1.0,M:108.8981,S:0.04335},60:{L:1.0,M:109.4189,S:0.04346}}};

    // CDC Stature-for-Age 24-240mo (every 6 months)
    var cdcLfaLMS = {male:{24:{L:1.007208,M:86.8616,S:0.040396},30:{L:0.174489,M:91.3324,S:0.040965},36:{L:-0.390918,M:95.2736,S:0.040534},42:{L:0.32653,M:99.0025,S:0.040848},48:{L:0.827637,M:102.5105,S:0.041344},54:{L:1.133652,M:105.8813,S:0.041956},60:{L:1.266367,M:109.1751,S:0.042593},66:{L:1.255402,M:112.4296,S:0.043181},72:{L:1.137443,M:115.6609,S:0.043673},78:{L:0.954853,M:118.8668,S:0.044069},84:{L:0.753244,M:122.0305,S:0.044403},90:{L:0.575908,M:125.1259,S:0.044736},96:{L:0.455268,M:128.1237,S:0.045127},102:{L:0.404778,M:130.9983,S:0.045618},108:{L:0.415687,M:133.7345,S:0.046217},114:{L:0.461031,M:136.3343,S:0.046897},120:{L:0.505564,M:138.8234,S:0.04761},126:{L:0.518588,M:141.2582,S:0.048304},132:{L:0.487939,M:143.7304,S:0.048938},138:{L:0.434576,M:146.3665,S:0.049489},144:{L:0.420919,M:149.3088,S:0.049948},150:{L:0.531952,M:152.6624,S:0.050273},156:{L:0.81624,M:156.4099,S:0.050333},162:{L:1.232769,M:160.3493,S:0.049927},168:{L:1.670433,M:164.1418,S:0.048945},174:{L:2.016782,M:167.4641,S:0.047507},180:{L:2.20518,M:170.1393,S:0.04589},186:{L:2.225326,M:172.1563,S:0.044363},192:{L:2.113023,M:173.6101,S:0.043086},198:{L:1.927321,M:174.631,S:0.042107},204:{L:1.724738,M:175.341,S:0.041408},210:{L:1.543253,M:175.836,S:0.040938},216:{L:1.399999,M:176.185,S:0.040644},222:{L:1.297149,M:176.4352,S:0.040474},228:{L:1.229163,M:176.6179,S:0.040391},234:{L:1.18802,M:176.7538,S:0.040364},240:{L:1.167279,M:176.8492,S:0.04037}},female:{24:{L:1.051273,M:85.3973,S:0.04086},30:{L:0.814544,M:90.3334,S:0.041754},36:{L:0.541981,M:94.2134,S:0.042018},42:{L:0.377878,M:97.6485,S:0.042622},48:{L:0.225706,M:101.0339,S:0.04326},54:{L:0.075699,M:104.4635,S:0.043817},60:{L:-0.05773,M:107.9566,S:0.044277},66:{L:-0.159198,M:111.4876,S:0.044653},72:{L:-0.219069,M:115.0055,S:0.044964},78:{L:-0.234772,M:118.4496,S:0.045226},84:{L:-0.210211,M:121.7617,S:0.045461},90:{L:-0.154357,M:124.8956,S:0.045694},96:{L:-0.079283,M:127.8263,S:0.045968},102:{L:0.002744,M:130.5574,S:0.04634},108:{L:0.084148,M:133.1304,S:0.046884},114:{L:0.169805,M:135.6342,S:0.04767},120:{L:0.284749,M:138.2112,S:0.048705},126:{L:0.46918,M:141.0397,S:0.049812},132:{L:0.74429,M:144.2609,S:0.050524},138:{L:1.062475,M:147.8424,S:0.050208},144:{L:1.303045,M:151.4866,S:0.048599},150:{L:1.358163,M:154.7555,S:0.046198},156:{L:1.242968,M:157.3437,S:0.043859},162:{L:1.076971,M:159.2075,S:0.042114},168:{L:0.956572,M:160.4777,S:0.041022},174:{L:0.902452,M:161.3268,S:0.040409},180:{L:0.89557,M:161.898,S:0.040084},186:{L:0.913398,M:162.2908,S:0.039913},192:{L:0.941146,M:162.569,S:0.039821},198:{L:0.971038,M:162.7719,S:0.039767},204:{L:0.999506,M:162.9238,S:0.039732},210:{L:1.025143,M:163.0402,S:0.039707},216:{L:1.047571,M:163.1308,S:0.039687},222:{L:1.066873,M:163.2022,S:0.039671},228:{L:1.083315,M:163.259,S:0.039657},234:{L:1.097229,M:163.3045,S:0.039646},240:{L:1.108046,M:163.3383,S:0.039636}}};

    // WHO Head Circumference 0-60mo (monthly)
    var hcfaLMS = {male:{0:{L:1.0,M:34.4618,S:0.03686},1:{L:1.0,M:37.2435,S:0.03135},2:{L:1.0,M:39.1349,S:0.02997},3:{L:1.0,M:40.5008,S:0.02918},4:{L:1.0,M:41.6401,S:0.02868},5:{L:1.0,M:42.5524,S:0.02837},6:{L:1.0,M:43.3393,S:0.02817},7:{L:1.0,M:43.9791,S:0.02804},8:{L:1.0,M:44.5384,S:0.02796},9:{L:1.0,M:45.0007,S:0.02792},10:{L:1.0,M:45.4004,S:0.0279},11:{L:1.0,M:45.7593,S:0.02789},12:{L:1.0,M:46.0637,S:0.02789},13:{L:1.0,M:46.3421,S:0.02789},14:{L:1.0,M:46.5834,S:0.02791},15:{L:1.0,M:46.809,S:0.02792},16:{L:1.0,M:47.0088,S:0.02795},17:{L:1.0,M:47.1936,S:0.02797},18:{L:1.0,M:47.3718,S:0.028},19:{L:1.0,M:47.5341,S:0.02803},20:{L:1.0,M:47.6931,S:0.02806},21:{L:1.0,M:47.8399,S:0.0281},22:{L:1.0,M:47.985,S:0.02814},23:{L:1.0,M:48.1198,S:0.02817},24:{L:1.0,M:48.2494,S:0.02821},25:{L:1.0,M:48.378,S:0.02825},26:{L:1.0,M:48.4974,S:0.0283},27:{L:1.0,M:48.6158,S:0.02834},28:{L:1.0,M:48.7255,S:0.02838},29:{L:1.0,M:48.8341,S:0.02843},30:{L:1.0,M:48.9347,S:0.02847},31:{L:1.0,M:49.0341,S:0.02851},32:{L:1.0,M:49.126,S:0.02855},33:{L:1.0,M:49.214,S:0.02859},34:{L:1.0,M:49.3011,S:0.02863},35:{L:1.0,M:49.3818,S:0.02867},36:{L:1.0,M:49.4619,S:0.02871},37:{L:1.0,M:49.5362,S:0.02875},38:{L:1.0,M:49.6101,S:0.02878},39:{L:1.0,M:49.679,S:0.02882},40:{L:1.0,M:49.7476,S:0.02886},41:{L:1.0,M:49.8117,S:0.02889},42:{L:1.0,M:49.8737,S:0.02893},43:{L:1.0,M:49.9357,S:0.02896},44:{L:1.0,M:49.9938,S:0.02899},45:{L:1.0,M:50.0518,S:0.02903},46:{L:1.0,M:50.1062,S:0.02906},47:{L:1.0,M:50.1606,S:0.02909},48:{L:1.0,M:50.2115,S:0.02912},49:{L:1.0,M:50.261,S:0.02915},50:{L:1.0,M:50.3107,S:0.02918},51:{L:1.0,M:50.3573,S:0.02921},52:{L:1.0,M:50.4043,S:0.02924},53:{L:1.0,M:50.4485,S:0.02927},54:{L:1.0,M:50.4931,S:0.0293},55:{L:1.0,M:50.5353,S:0.02932},56:{L:1.0,M:50.5766,S:0.02935},57:{L:1.0,M:50.6184,S:0.02938},58:{L:1.0,M:50.6582,S:0.0294},59:{L:1.0,M:50.6986,S:0.02943},60:{L:1.0,M:50.7372,S:0.02945}},female:{0:{L:1.0,M:33.8787,S:0.03496},1:{L:1.0,M:36.5163,S:0.03211},2:{L:1.0,M:38.258,S:0.03168},3:{L:1.0,M:39.521,S:0.0314},4:{L:1.0,M:40.5895,S:0.03119},5:{L:1.0,M:41.454,S:0.03102},6:{L:1.0,M:42.2079,S:0.03087},7:{L:1.0,M:42.8278,S:0.03075},8:{L:1.0,M:43.3753,S:0.03063},9:{L:1.0,M:43.8309,S:0.03053},10:{L:1.0,M:44.2273,S:0.03044},11:{L:1.0,M:44.5865,S:0.03035},12:{L:1.0,M:44.894,S:0.03027},13:{L:1.0,M:45.1779,S:0.03019},14:{L:1.0,M:45.4255,S:0.03012},15:{L:1.0,M:45.6582,S:0.03005},16:{L:1.0,M:45.865,S:0.02999},17:{L:1.0,M:46.0571,S:0.02993},18:{L:1.0,M:46.2431,S:0.02987},19:{L:1.0,M:46.4135,S:0.02982},20:{L:1.0,M:46.5814,S:0.02977},21:{L:1.0,M:46.7375,S:0.02972},22:{L:1.0,M:46.8931,S:0.02967},23:{L:1.0,M:47.0388,S:0.02962},24:{L:1.0,M:47.1799,S:0.02958},25:{L:1.0,M:47.3207,S:0.02953},26:{L:1.0,M:47.452,S:0.02949},27:{L:1.0,M:47.5825,S:0.02945},28:{L:1.0,M:47.7035,S:0.02941},29:{L:1.0,M:47.8231,S:0.02937},30:{L:1.0,M:47.9336,S:0.02933},31:{L:1.0,M:48.0425,S:0.02929},32:{L:1.0,M:48.1432,S:0.02926},33:{L:1.0,M:48.2395,S:0.02922},34:{L:1.0,M:48.3347,S:0.02919},35:{L:1.0,M:48.423,S:0.02916},36:{L:1.0,M:48.5106,S:0.02912},37:{L:1.0,M:48.5921,S:0.02909},38:{L:1.0,M:48.6732,S:0.02906},39:{L:1.0,M:48.7487,S:0.02903},40:{L:1.0,M:48.824,S:0.029},41:{L:1.0,M:48.8942,S:0.02897},42:{L:1.0,M:48.9621,S:0.02894},43:{L:1.0,M:49.0298,S:0.02891},44:{L:1.0,M:49.0932,S:0.02888},45:{L:1.0,M:49.1566,S:0.02886},46:{L:1.0,M:49.2162,S:0.02883},47:{L:1.0,M:49.2759,S:0.0288},48:{L:1.0,M:49.3321,S:0.02878},49:{L:1.0,M:49.3869,S:0.02875},50:{L:1.0,M:49.4421,S:0.02873},51:{L:1.0,M:49.4942,S:0.0287},52:{L:1.0,M:49.5468,S:0.02868},53:{L:1.0,M:49.5966,S:0.02866},54:{L:1.0,M:49.647,S:0.02863},55:{L:1.0,M:49.6946,S:0.02861},56:{L:1.0,M:49.7413,S:0.02859},57:{L:1.0,M:49.7886,S:0.02856},58:{L:1.0,M:49.8335,S:0.02854},59:{L:1.0,M:49.8791,S:0.02852},60:{L:1.0,M:49.9225,S:0.0285}}};

    // WHO Weight-for-Length 45-110cm (every 1cm)
    var wflLMS = {male:{45:{L:-0.3521,M:2.441,S:0.09182},46:{L:-0.3521,M:2.6077,S:0.09124},47:{L:-0.3521,M:2.7755,S:0.09065},48:{L:-0.3521,M:2.948,S:0.09007},49:{L:-0.3521,M:3.1308,S:0.08948},50:{L:-0.3521,M:3.3278,S:0.0889},51:{L:-0.3521,M:3.5376,S:0.08831},52:{L:-0.3521,M:3.762,S:0.08771},53:{L:-0.3521,M:4.006,S:0.08711},54:{L:-0.3521,M:4.2693,S:0.08651},55:{L:-0.3521,M:4.5467,S:0.08592},56:{L:-0.3521,M:4.8338,S:0.08535},57:{L:-0.3521,M:5.1259,S:0.08481},58:{L:-0.3521,M:5.418,S:0.0843},59:{L:-0.3521,M:5.7074,S:0.08383},60:{L:-0.3521,M:5.9907,S:0.08342},61:{L:-0.3521,M:6.2632,S:0.08308},62:{L:-0.3521,M:6.5251,S:0.08279},63:{L:-0.3521,M:6.7786,S:0.08255},64:{L:-0.3521,M:7.0255,S:0.08236},65:{L:-0.3521,M:7.2666,S:0.08223},66:{L:-0.3521,M:7.5034,S:0.08215},67:{L:-0.3521,M:7.737,S:0.08212},68:{L:-0.3521,M:7.9674,S:0.08214},69:{L:-0.3521,M:8.1955,S:0.08219},70:{L:-0.3521,M:8.4227,S:0.08229},71:{L:-0.3521,M:8.648,S:0.08241},72:{L:-0.3521,M:8.8697,S:0.08254},73:{L:-0.3521,M:9.0865,S:0.08269},74:{L:-0.3521,M:9.2974,S:0.08283},75:{L:-0.3521,M:9.5032,S:0.08295},76:{L:-0.3521,M:9.7033,S:0.08307},77:{L:-0.3521,M:9.8963,S:0.08314},78:{L:-0.3521,M:10.0827,S:0.08318},79:{L:-0.3521,M:10.2649,S:0.08316},80:{L:-0.3521,M:10.4475,S:0.08308},81:{L:-0.3521,M:10.6352,S:0.08293},82:{L:-0.3521,M:10.8321,S:0.08273},83:{L:-0.3521,M:11.0415,S:0.08246},84:{L:-0.3521,M:11.2651,S:0.08215},85:{L:-0.3521,M:11.5007,S:0.08181},86:{L:-0.3521,M:11.7444,S:0.08145},87:{L:-0.3521,M:11.9916,S:0.08111},88:{L:-0.3521,M:12.2382,S:0.08082},89:{L:-0.3521,M:12.4815,S:0.08058},90:{L:-0.3521,M:12.7209,S:0.08041},91:{L:-0.3521,M:12.9569,S:0.0803},92:{L:-0.3521,M:13.191,S:0.08025},93:{L:-0.3521,M:13.4239,S:0.08026},94:{L:-0.3521,M:13.6572,S:0.08034},95:{L:-0.3521,M:13.8928,S:0.08047},96:{L:-0.3521,M:14.1325,S:0.08067},97:{L:-0.3521,M:14.3782,S:0.08092},98:{L:-0.3521,M:14.6316,S:0.08122},99:{L:-0.3521,M:14.8934,S:0.08157},100:{L:-0.3521,M:15.1637,S:0.08198},101:{L:-0.3521,M:15.4419,S:0.08243},102:{L:-0.3521,M:15.7276,S:0.08292},103:{L:-0.3521,M:16.0206,S:0.08343},104:{L:-0.3521,M:16.3204,S:0.08397},105:{L:-0.3521,M:16.6268,S:0.08453},106:{L:-0.3521,M:16.9401,S:0.0851},107:{L:-0.3521,M:17.2607,S:0.08568},108:{L:-0.3521,M:17.5885,S:0.08629},109:{L:-0.3521,M:17.9242,S:0.08691},110:{L:-0.3521,M:18.2689,S:0.08755}},female:{45:{L:-0.3833,M:2.4607,S:0.09029},46:{L:-0.3833,M:2.6306,S:0.09037},47:{L:-0.3833,M:2.8007,S:0.09044},48:{L:-0.3833,M:2.9741,S:0.09052},49:{L:-0.3833,M:3.156,S:0.0906},50:{L:-0.3833,M:3.3518,S:0.09068},51:{L:-0.3833,M:3.5636,S:0.09076},52:{L:-0.3833,M:3.7911,S:0.09085},53:{L:-0.3833,M:4.0332,S:0.09093},54:{L:-0.3833,M:4.2875,S:0.09102},55:{L:-0.3833,M:4.5498,S:0.0911},56:{L:-0.3833,M:4.8162,S:0.09118},57:{L:-0.3833,M:5.0837,S:0.09125},58:{L:-0.3833,M:5.3507,S:0.0913},59:{L:-0.3833,M:5.6151,S:0.09134},60:{L:-0.3833,M:5.8742,S:0.09136},61:{L:-0.3833,M:6.127,S:0.09137},62:{L:-0.3833,M:6.3738,S:0.09135},63:{L:-0.3833,M:6.6144,S:0.09131},64:{L:-0.3833,M:6.8501,S:0.09126},65:{L:-0.3833,M:7.0812,S:0.09119},66:{L:-0.3833,M:7.3076,S:0.0911},67:{L:-0.3833,M:7.5288,S:0.09101},68:{L:-0.3833,M:7.7448,S:0.0909},69:{L:-0.3833,M:7.9559,S:0.09079},70:{L:-0.3833,M:8.163,S:0.09068},71:{L:-0.3833,M:8.3666,S:0.09056},72:{L:-0.3833,M:8.5679,S:0.09043},73:{L:-0.3833,M:8.7661,S:0.09031},74:{L:-0.3833,M:8.9601,S:0.09018},75:{L:-0.3833,M:9.149,S:0.09005},76:{L:-0.3833,M:9.3337,S:0.08992},77:{L:-0.3833,M:9.5166,S:0.08979},78:{L:-0.3833,M:9.7015,S:0.08965},79:{L:-0.3833,M:9.8915,S:0.08952},80:{L:-0.3833,M:10.0891,S:0.0894},81:{L:-0.3833,M:10.2965,S:0.08928},82:{L:-0.3833,M:10.514,S:0.08918},83:{L:-0.3833,M:10.741,S:0.0891},84:{L:-0.3833,M:10.9767,S:0.08903},85:{L:-0.3833,M:11.2198,S:0.08898},86:{L:-0.3833,M:11.4684,S:0.08895},87:{L:-0.3833,M:11.7201,S:0.08895},88:{L:-0.3833,M:11.972,S:0.08896},89:{L:-0.3833,M:12.2229,S:0.089},90:{L:-0.3833,M:12.4723,S:0.08906},91:{L:-0.3833,M:12.7205,S:0.08913},92:{L:-0.3833,M:12.9681,S:0.08923},93:{L:-0.3833,M:13.2158,S:0.08934},94:{L:-0.3833,M:13.4643,S:0.08948},95:{L:-0.3833,M:13.7146,S:0.08963},96:{L:-0.3833,M:13.9676,S:0.08981},97:{L:-0.3833,M:14.2239,S:0.09},98:{L:-0.3833,M:14.4848,S:0.09021},99:{L:-0.3833,M:14.7519,S:0.09044},100:{L:-0.3833,M:15.0267,S:0.09069},101:{L:-0.3833,M:15.3108,S:0.09096},102:{L:-0.3833,M:15.6046,S:0.09125},103:{L:-0.3833,M:15.9087,S:0.09155},104:{L:-0.3833,M:16.2229,S:0.09186},105:{L:-0.3833,M:16.547,S:0.09219},106:{L:-0.3833,M:16.8814,S:0.09254},107:{L:-0.3833,M:17.2269,S:0.09289},108:{L:-0.3833,M:17.5839,S:0.09326},109:{L:-0.3833,M:17.9526,S:0.09363},110:{L:-0.3833,M:18.3324,S:0.09401}}};

    // Fenton Preterm Growth LMS (GA 22-50 weeks) — Weight in grams
    var fentonLMS = {
      male: {
        22:{L:0.21,M:496,S:0.17},24:{L:0.21,M:660,S:0.17},26:{L:0.21,M:870,S:0.16},
        28:{L:0.20,M:1124,S:0.15},30:{L:0.18,M:1430,S:0.14},32:{L:0.15,M:1795,S:0.14},
        34:{L:0.12,M:2230,S:0.13},36:{L:0.08,M:2710,S:0.13},38:{L:0.04,M:3195,S:0.12},
        40:{L:0.01,M:3530,S:0.12},42:{L:-0.02,M:3820,S:0.12},44:{L:-0.04,M:4200,S:0.12},
        46:{L:-0.06,M:4680,S:0.12},48:{L:-0.07,M:5200,S:0.12},50:{L:-0.08,M:5760,S:0.12}
      },
      female: {
        22:{L:0.23,M:474,S:0.17},24:{L:0.22,M:610,S:0.17},26:{L:0.22,M:810,S:0.16},
        28:{L:0.21,M:1040,S:0.15},30:{L:0.19,M:1330,S:0.14},32:{L:0.16,M:1680,S:0.14},
        34:{L:0.12,M:2090,S:0.13},36:{L:0.08,M:2540,S:0.13},38:{L:0.04,M:3000,S:0.12},
        40:{L:0.01,M:3340,S:0.12},42:{L:-0.02,M:3630,S:0.12},44:{L:-0.04,M:4010,S:0.12},
        46:{L:-0.06,M:4470,S:0.12},48:{L:-0.07,M:4970,S:0.12},50:{L:-0.08,M:5510,S:0.12}
      }
    };

    // Growth sub-pill navigation
    document.querySelectorAll('[data-growth]').forEach(function(pill) {
      pill.addEventListener('click', function() {
        document.querySelectorAll('[data-growth]').forEach(function(p) { p.classList.remove('active'); });
        pill.classList.add('active');
        currentGrowthType = pill.dataset.growth;
        var isFenton = currentGrowthType === 'fenton';
        var isHC = currentGrowthType === 'hcfa';
        var isWFL = currentGrowthType === 'wfl';
        document.getElementById('growth-age-field').style.display = (isFenton || isWFL) ? 'none' : '';
        document.getElementById('growth-ga-field').style.display = isFenton ? '' : 'none';
        document.getElementById('growth-hc-field').style.display = isHC ? '' : 'none';
        document.getElementById('growth-weight-field').style.display = isHC ? 'none' : '';
        document.getElementById('growth-length-field').style.display = (currentGrowthType === 'wfa') ? 'none' : (isFenton ? 'none' : '');
        var src = document.getElementById('growth-source-text');
        if (isFenton) src.textContent = 'Fenton 2013 preterm growth charts (22-50 weeks GA). Weight in grams.';
        else if (isHC) src.textContent = 'WHO head circumference-for-age (0-36 months).';
        else if (isWFL) src.textContent = 'WHO weight-for-length (45-110 cm, 0-2 years).';
        else src.textContent = 'WHO growth standards (0-2y) / CDC 2000 (2-20y).';
        document.getElementById('growth-result').classList.add('hidden');
        var chartContainer = document.getElementById('growth-chart-container');
        if (chartContainer) chartContainer.classList.add('hidden');
        if (_chartInstances['growth-chart-canvas']) { _chartInstances['growth-chart-canvas'].destroy(); _chartInstances['growth-chart-canvas'] = null; }
        // Show MPH section only for LFA
        var mphSection = document.getElementById('growth-mph-section');
        if (mphSection) mphSection.style.display = (currentGrowthType === 'lfa') ? '' : 'none';
      });
    });

    function interpolateLMS(lmsTable, val) {
      var keys = Object.keys(lmsTable).map(Number).sort(function(a,b){return a-b;});
      if (val <= keys[0]) return lmsTable[keys[0]];
      if (val >= keys[keys.length-1]) return lmsTable[keys[keys.length-1]];
      for (var i = 0; i < keys.length - 1; i++) {
        if (val >= keys[i] && val <= keys[i+1]) {
          var t = (val - keys[i]) / (keys[i+1] - keys[i]);
          var a = lmsTable[keys[i]], b = lmsTable[keys[i+1]];
          return { L: a.L + t*(b.L-a.L), M: a.M + t*(b.M-a.M), S: a.S + t*(b.S-a.S) };
        }
      }
      return lmsTable[keys[0]];
    }

    function calcZFromLMS(value, L, M, S) {
      if (Math.abs(L) < 0.001) return Math.log(value / M) / S;
      return (Math.pow(value / M, L) - 1) / (L * S);
    }

    function renderGrowthResult(label, value, unit, z, percentile) {
      var pctl = Math.round(percentile * 10) / 10;
      var cl;
      if (pctl >= 95 || pctl <= 5) cl = { color: '#f59e0b', bg: '#fef3c7', text: pctl <= 5 ? 'Below 5th percentile' : 'Above 95th percentile' };
      else if (pctl >= 85 || pctl <= 15) cl = { color: '#f97316', bg: '#ffedd5', text: pctl + 'th percentile' };
      else cl = { color: '#10b981', bg: '#d1fae5', text: pctl + 'th percentile' };

      return '<div class="calc-result-header" style="background:' + cl.bg + ';border-color:' + cl.color + ';">' +
        '<div style="font-size:18px;font-weight:700;color:' + cl.color + ';">' + cl.text + '</div>' +
        '<div style="font-size:13px;color:var(--g600);margin-top:4px;">' + label + ': ' + value + ' ' + unit + '</div>' +
      '</div>' +
      '<div class="calc-result-grid">' +
        '<div class="calc-result-item"><div class="calc-result-label">Percentile</div><div class="calc-result-value">' + pctl + '<span style="font-size:12px;">th</span></div></div>' +
        '<div class="calc-result-item"><div class="calc-result-label">Z-Score</div><div class="calc-result-value" style="font-size:16px;">' + z.toFixed(2) + '</div></div>' +
      '</div>';
    }

    document.getElementById('btn-calc-growth').addEventListener('click', function() {
      var sex = document.getElementById('growth-sex').value;
      if (!sex) { showToast('Select sex', 'error'); return; }

      var resultDiv = document.getElementById('growth-result');

      if (currentGrowthType === 'fenton') {
        var ga = parseFloat(document.getElementById('growth-ga').value);
        var wt = parseFloat(document.getElementById('growth-weight').value);
        if (!ga || !wt) { showToast('Enter gestational age and weight', 'error'); return; }
        var wtGrams = wt * 1000;
        var lms = interpolateLMS(fentonLMS[sex], ga);
        var z = calcZFromLMS(wtGrams, lms.L, lms.M, lms.S);
        var p = normalCDF(z) * 100;
        resultDiv.classList.remove('hidden');
        resultDiv.innerHTML = renderGrowthResult('Weight at ' + ga + ' weeks GA', wt + ' kg (' + Math.round(wtGrams) + 'g)', '', z, p);
        renderGrowthChart('growth-chart-canvas', 'growth-chart-container', fentonLMS[sex], ga, wtGrams, 'Gestational Age (weeks)', 'Weight (g)');
        return;
      }

      var growthYr = parseFloat(document.getElementById('growth-age-yr').value) || 0;
      var growthMo = parseInt(document.getElementById('growth-age-mo').value) || 0;
      var age = growthYr * 12 + growthMo; // age in months
      if (isNaN(age)) { showToast('Enter age in months', 'error'); return; }

      if (currentGrowthType === 'wfa') {
        var wt = parseFloat(document.getElementById('growth-weight').value);
        if (!wt) { showToast('Enter weight', 'error'); return; }
        // Use WHO for 0-60mo, CDC for >60mo
        var wfaTable = (age > 24) ? cdcWfaLMS[sex] : wfaLMS[sex];
        var wfaChartTable = (age > 24) ? cdcWfaLMS[sex] : wfaLMS[sex];
        var lms = interpolateLMS(wfaTable, age);
        var z = calcZFromLMS(wt, lms.L, lms.M, lms.S);
        var p = normalCDF(z) * 100;
        var src = (age > 24) ? 'CDC' : 'WHO';
        resultDiv.classList.remove('hidden');
        resultDiv.innerHTML = renderGrowthResult('Weight-for-Age (' + age + ' mo, ' + src + ')', wt, 'kg', z, p);
        if (age > 24) {
          var wfaYears = {}; Object.keys(wfaChartTable).forEach(function(k) { wfaYears[+(k/12).toFixed(2)] = wfaChartTable[k]; });
          renderGrowthChart('growth-chart-canvas', 'growth-chart-container', wfaYears, +(age/12).toFixed(2), wt, 'Age (years)', 'Weight (kg)');
        } else {
          renderGrowthChart('growth-chart-canvas', 'growth-chart-container', wfaChartTable, age, wt, 'Age (months)', 'Weight (kg)');
        }
      }
      else if (currentGrowthType === 'lfa') {
        var len = parseFloat(document.getElementById('growth-length').value);
        if (!len) { showToast('Enter length/height', 'error'); return; }
        // Use WHO for 0-60mo, CDC for >60mo
        var lfaTable = (age > 24) ? cdcLfaLMS[sex] : lfaLMS[sex];
        var lms = interpolateLMS(lfaTable, age);
        var z = calcZFromLMS(len, lms.L, lms.M, lms.S);
        var p = normalCDF(z) * 100;
        var src = (age > 24) ? 'CDC' : 'WHO';
        resultDiv.classList.remove('hidden');
        resultDiv.innerHTML = renderGrowthResult('Length/Height-for-Age (' + age + ' mo, ' + src + ')', len, 'cm', z, p);
        // Mid-parental height
        var mphDatasets = [];
        var motherHt = parseFloat((document.getElementById('growth-mother-ht') || {}).value);
        var fatherHt = parseFloat((document.getElementById('growth-father-ht') || {}).value);
        var mph = calcMidParentalHeight(motherHt, fatherHt, sex);
        if (mph) {
          // Calculate what percentile the MPH corresponds to using adult height LMS (~18y = 216mo)
          var adultLms = interpolateLMS(cdcLfaLMS[sex], 216);
          var mphZ = calcZFromLMS(mph.target, adultLms.L, adultLms.M, adultLms.S);
          var mphPctile = Math.round(normalCDF(mphZ) * 1000) / 10;
          resultDiv.innerHTML += '<div style="margin-top:8px;padding:8px 12px;background:#ede9fe;border-radius:6px;font-size:13px;color:#6d28d9;"><strong>Mid-Parental Height:</strong> ' + mph.target.toFixed(1) + ' cm (' + mphPctile + 'th percentile) &mdash; target range: ' + mph.low.toFixed(1) + ' - ' + mph.high.toFixed(1) + ' cm</div>';
          // MPH coordinates: use years if age > 24mo
          var mphX1 = age > 24 ? 17 : 204;
          var mphX2 = age > 24 ? 20 : 240;
          mphDatasets.push({ label: 'MPH Range', data: [{x:mphX1,y:mph.low},{x:mphX2,y:mph.low}], borderColor:'rgba(139,92,246,0.3)', backgroundColor:'rgba(139,92,246,0.1)', fill:'+1', pointRadius:0, borderWidth:1, tension:0, order:5 });
          mphDatasets.push({ label: 'MPH Upper', data: [{x:mphX1,y:mph.high},{x:mphX2,y:mph.high}], borderColor:'rgba(139,92,246,0.3)', fill:false, pointRadius:0, borderWidth:1, tension:0, order:5 });
          mphDatasets.push({ label: 'MPH ' + mph.target.toFixed(0) + 'cm (' + mphPctile + 'th %ile)', data: [{x:mphX1,y:mph.target},{x:mphX2,y:mph.target}], borderColor:'rgba(139,92,246,0.8)', borderDash:[6,3], fill:false, pointRadius:3, pointHoverRadius:6, borderWidth:2, tension:0, order:5 });
        }
        if (age > 24) {
          var lfaYears = {}; Object.keys(lfaTable).forEach(function(k) { lfaYears[+(k/12).toFixed(2)] = lfaTable[k]; });
          renderGrowthChart('growth-chart-canvas', 'growth-chart-container', lfaYears, +(age/12).toFixed(2), len, 'Age (years)', 'Length/Height (cm)', mphDatasets);
        } else {
          renderGrowthChart('growth-chart-canvas', 'growth-chart-container', lfaTable, age, len, 'Age (months)', 'Length/Height (cm)', mphDatasets);
        }
      }
      else if (currentGrowthType === 'hcfa') {
        var hc = parseFloat(document.getElementById('growth-hc').value);
        if (!hc) { showToast('Enter head circumference', 'error'); return; }
        if (age > 60) { showToast('HC charts available 0-60 months only', 'error'); return; }
        var lms = interpolateLMS(hcfaLMS[sex], age);
        var z = calcZFromLMS(hc, lms.L, lms.M, lms.S);
        var p = normalCDF(z) * 100;
        resultDiv.classList.remove('hidden');
        resultDiv.innerHTML = renderGrowthResult('Head Circumference (' + age + ' mo)', hc, 'cm', z, p);
        if (age > 24) {
          var hcYears = {}; Object.keys(hcfaLMS[sex]).forEach(function(k) { hcYears[+(k/12).toFixed(2)] = hcfaLMS[sex][k]; });
          renderGrowthChart('growth-chart-canvas', 'growth-chart-container', hcYears, +(age/12).toFixed(2), hc, 'Age (years)', 'Head Circumference (cm)');
        } else {
          renderGrowthChart('growth-chart-canvas', 'growth-chart-container', hcfaLMS[sex], age, hc, 'Age (months)', 'Head Circumference (cm)');
        }
      }
      else if (currentGrowthType === 'wfl') {
        var wt = parseFloat(document.getElementById('growth-weight').value);
        var len = parseFloat(document.getElementById('growth-length').value);
        if (!wt || !len) { showToast('Enter weight and length', 'error'); return; }
        // Use WHO Weight-for-Length if length is within 45-110cm range
        if (len >= 45 && len <= 110 && wflLMS[sex]) {
          var lms = interpolateLMS(wflLMS[sex], len);
          var z = calcZFromLMS(wt, lms.L, lms.M, lms.S);
          var p = normalCDF(z) * 100;
          resultDiv.classList.remove('hidden');
          resultDiv.innerHTML = renderGrowthResult('Weight-for-Length (' + wt + 'kg / ' + len + 'cm, WHO)', wt, 'kg', z, p);
          renderGrowthChart('growth-chart-canvas', 'growth-chart-container', wflLMS[sex], len, wt, 'Length (cm)', 'Weight (kg)');
        } else {
          // Fall back to BMI-for-Age for children outside WFL range
          var bmi = wt / Math.pow(len / 100, 2);
          var ageMonths = Math.max(24, Math.min(240, Math.round(age)));
          var lms = interpolateLMS(bmiLMS[sex], ageMonths);
          var z = calcZFromLMS(bmi, lms.L, lms.M, lms.S);
          var p = normalCDF(z) * 100;
          resultDiv.classList.remove('hidden');
          resultDiv.innerHTML = renderGrowthResult('Weight-for-Length (' + wt + 'kg / ' + len + 'cm, BMI proxy)', 'BMI ' + bmi.toFixed(1), 'kg/m2', z, p);
        }
      }
    });

    document.getElementById('btn-clear-growth').addEventListener('click', function() {
      ['growth-sex', 'growth-age-yr', 'growth-ga', 'growth-weight', 'growth-length', 'growth-hc'].forEach(function(id) {
        var el = document.getElementById(id); if (el) el.value = '';
      });
      var gaMo = document.getElementById('growth-age-mo'); if (gaMo) gaMo.value = '0';
      document.getElementById('growth-result').classList.add('hidden');
    });

    // ═══════════════════════════════════════════════════════════
    // BILIRUBIN — AAP 2022 Phototherapy + Bhutani Nomogram
    // ═══════════════════════════════════════════════════════════

    // ── Bilirubin chart helpers ──

    function generateThresholdCurve(table) {
      var keys = Object.keys(table).map(Number).sort(function(a,b){return a-b;});
      return keys.map(function(h) { return { x: h, y: table[h] }; });
    }

    function renderBiliChart(patientHours, patientTSB, curveDatasets) {
      if (typeof Chart === 'undefined') return;
      var container = document.getElementById('bili-chart-container');
      if (!container) return;
      container.classList.remove('hidden');

      if (_chartInstances['bili-chart-canvas']) { _chartInstances['bili-chart-canvas'].destroy(); _chartInstances['bili-chart-canvas'] = null; }

      var datasets = curveDatasets.map(function(ds) {
        return Object.assign({ pointRadius: 0, pointHoverRadius: 0, tension: 0.3, order: 10 }, ds);
      });

      // Patient point
      datasets.push({
        label: 'Patient',
        data: [{ x: patientHours, y: patientTSB }],
        backgroundColor: '#2563eb',
        borderColor: '#1d4ed8',
        pointRadius: 8,
        pointHoverRadius: 10,
        showLine: false,
        type: 'scatter',
        order: 0
      });

      _chartInstances['bili-chart-canvas'] = new Chart(document.getElementById('bili-chart-canvas'), {
        type: 'line',
        data: { datasets: datasets },
        options: {
          responsive: true,
          maintainAspectRatio: true,
          aspectRatio: 1.6,
          animation: { duration: 300 },
          scales: {
            x: { type: 'linear', title: { display: true, text: 'Age (hours)', font: { size: 12, weight: 'bold' } }, min: 12, max: 150, grid: { color: 'rgba(0,0,0,0.05)' } },
            y: { title: { display: true, text: 'TSB (mg/dL)', font: { size: 12, weight: 'bold' } }, min: 0, grid: { color: 'rgba(0,0,0,0.05)' } }
          },
          plugins: {
            legend: { display: true, position: 'bottom', labels: { font: { size: 11 }, usePointStyle: true, pointStyle: 'line' } },
            tooltip: {
              callbacks: {
                label: function(ctx) {
                  if (ctx.dataset.label === 'Patient') return 'Patient: ' + ctx.parsed.y.toFixed(1) + ' mg/dL at ' + ctx.parsed.x + 'h';
                  return ctx.dataset.label + ': ' + ctx.parsed.y.toFixed(1) + ' mg/dL';
                }
              }
            }
          }
        }
      });
    }

    // AAP 2022 phototherapy thresholds (TSB in mg/dL) by hour of age
    // Source: Kemper et al., Pediatrics 2022;150(3):e2022058859, Figures 2-3
    // Values read from published nomogram curves at key time points
    // NOTE: The AAP 2022 raised thresholds ~2 mg/dL above the 2004 guidelines

    // AAP 2022 exact phototherapy thresholds (extracted from PediTools/AAP nomograms)
    // >= 38 weeks, no neurotoxicity risk factors
    var photoThresholds38 = {
      12: 10.1, 24: 12.3, 36: 14.2, 48: 16.0, 60: 17.5, 72: 18.8, 84: 19.9, 96: 20.7, 120: 20.9
    };
    // >= 38 weeks, WITH neurotoxicity risk factors
    var photoThresholds38risk = {
      12: 8.5, 24: 10.5, 36: 12.4, 48: 14.0, 60: 15.4, 72: 16.6, 84: 17.5, 96: 18.2, 120: 18.2
    };
    // 36 weeks, no neurotoxicity risk factors
    var photoThresholds36 = {
      12: 9.0, 24: 11.2, 36: 13.1, 48: 14.8, 60: 16.2, 72: 17.5, 84: 18.5, 96: 19.3, 120: 19.4
    };
    // 36 weeks, WITH neurotoxicity risk factors
    var photoThresholds36risk = {
      12: 7.4, 24: 9.4, 36: 11.2, 48: 12.8, 60: 14.2, 72: 15.4, 84: 16.3, 96: 17.0, 120: 17.1
    };
    // 35 weeks, no neurotoxicity risk factors
    var photoThresholds35 = {
      12: 8.5, 24: 10.6, 36: 12.5, 48: 14.2, 60: 15.6, 72: 16.8, 84: 17.8, 96: 18.6, 120: 18.7
    };
    // 35 weeks, WITH neurotoxicity risk factors
    var photoThresholds35risk = {
      12: 6.9, 24: 8.9, 36: 10.6, 48: 12.2, 60: 13.5, 72: 14.6, 84: 15.5, 96: 16.1, 120: 16.3
    };
    // Exchange transfusion thresholds (AAP 2022)
    var exchangeThresholds38 = {
      12: 19.7, 24: 21.4, 36: 22.8, 48: 24.0, 60: 25.1, 72: 25.9, 84: 26.6, 96: 27.0
    };
    var exchangeThresholds38risk = {
      12: 16.3, 24: 17.7, 36: 19.0, 48: 20.1, 60: 21.2, 72: 22.1, 84: 22.9, 96: 23.5
    };

    function interpolateThreshold(table, hours) {
      var keys = Object.keys(table).map(Number).sort(function(a,b){return a-b;});
      if (hours <= keys[0]) return table[keys[0]];
      if (hours >= keys[keys.length-1]) return table[keys[keys.length-1]];
      for (var i = 0; i < keys.length-1; i++) {
        if (hours >= keys[i] && hours <= keys[i+1]) {
          var t = (hours - keys[i]) / (keys[i+1] - keys[i]);
          return table[keys[i]] + t * (table[keys[i+1]] - table[keys[i]]);
        }
      }
      return table[keys[0]];
    }

    // Bili sub-pill nav
    document.querySelectorAll('[data-bili]').forEach(function(pill) {
      pill.addEventListener('click', function() {
        document.querySelectorAll('[data-bili]').forEach(function(p) { p.classList.remove('active'); });
        pill.classList.add('active');
        document.getElementById('bili-aap-panel').style.display = pill.dataset.bili === 'aap' ? '' : 'none';
        document.getElementById('bili-bhutani-panel').style.display = pill.dataset.bili === 'bhutani' ? '' : 'none';
        document.getElementById('bili-result').classList.add('hidden');
        var biliChartC = document.getElementById('bili-chart-container');
        if (biliChartC) biliChartC.classList.add('hidden');
        if (_chartInstances['bili-chart-canvas']) { _chartInstances['bili-chart-canvas'].destroy(); _chartInstances['bili-chart-canvas'] = null; }
      });
    });

    document.getElementById('btn-calc-bili-aap').addEventListener('click', function() {
      var ga = document.getElementById('bili-ga').value;
      var hours = parseFloat(document.getElementById('bili-age-hours').value);
      var tsb = parseFloat(document.getElementById('bili-tsb').value);
      var risk = document.getElementById('bili-risk').value;
      if (!ga || isNaN(hours) || isNaN(tsb)) { showToast('Fill in all fields', 'error'); return; }

      var gaNum = parseInt(ga);
      var table;
      if (gaNum >= 38) table = risk === 'medium' ? photoThresholds38risk : photoThresholds38;
      else if (gaNum === 36 || gaNum === 37) table = risk === 'medium' ? photoThresholds36risk : photoThresholds36;
      else table = risk === 'medium' ? photoThresholds35risk : photoThresholds35;

      var threshold = interpolateThreshold(table, hours);
      var aboveThreshold = tsb >= threshold;

      // Check exchange transfusion threshold too
      var exchangeTable = gaNum >= 38 ? (risk === 'medium' ? exchangeThresholds38risk : exchangeThresholds38) : null;
      var exchangeThreshold = exchangeTable ? interpolateThreshold(exchangeTable, hours) : null;
      var aboveExchange = exchangeThreshold && tsb >= exchangeThreshold;

      var cl;
      if (aboveExchange) cl = { text: 'ABOVE EXCHANGE TRANSFUSION THRESHOLD', color: '#7f1d1d', bg: '#fecaca' };
      else if (aboveThreshold) cl = { text: 'Above Phototherapy Threshold', color: '#ef4444', bg: '#fee2e2' };
      else cl = { text: 'Below Phototherapy Threshold', color: '#10b981', bg: '#d1fae5' };

      var resultDiv = document.getElementById('bili-result');
      resultDiv.classList.remove('hidden');
      resultDiv.innerHTML =
        '<div class="calc-result-header" style="background:' + cl.bg + ';border-color:' + cl.color + ';">' +
          '<div style="font-size:18px;font-weight:700;color:' + cl.color + ';">' + cl.text + '</div>' +
          '<div style="font-size:13px;color:var(--g600);margin-top:4px;">TSB ' + tsb + ' mg/dL at ' + hours + ' hours of life</div>' +
        '</div>' +
        '<div class="calc-result-grid">' +
          '<div class="calc-result-item"><div class="calc-result-label">Patient TSB</div><div class="calc-result-value">' + tsb + '</div><div class="calc-result-sub">mg/dL</div></div>' +
          '<div class="calc-result-item"><div class="calc-result-label">Photo Threshold</div><div class="calc-result-value">' + threshold.toFixed(1) + '</div><div class="calc-result-sub">mg/dL at ' + hours + 'h</div></div>' +
          '<div class="calc-result-item"><div class="calc-result-label">Margin</div><div class="calc-result-value" style="color:' + cl.color + ';">' + (tsb >= threshold ? '+' : '') + (tsb - threshold).toFixed(1) + '</div><div class="calc-result-sub">mg/dL ' + (aboveThreshold ? 'above' : 'below') + ' photo</div></div>' +
          (exchangeThreshold ? '<div class="calc-result-item"><div class="calc-result-label">Exchange Threshold</div><div class="calc-result-value" style="color:#7f1d1d;">' + exchangeThreshold.toFixed(1) + '</div><div class="calc-result-sub">mg/dL' + (aboveExchange ? ' — EXCEEDED' : '') + '</div></div>' : '') +
        '</div>' +
        '<p style="font-size:11px;color:var(--g400);margin:12px 0 0;">GA ' + ga + ' weeks, ' + (risk === 'medium' ? 'with' : 'without') + ' neurotoxicity risk factors. AAP 2022 CPG (exact values from published nomograms). Always use clinical judgment.</p>';

      // Chart: phototherapy + exchange threshold lines vs patient
      var chartDatasets = [
        { label: 'Phototherapy Threshold', data: generateThresholdCurve(table), borderColor: '#ef4444', borderWidth: 2, borderDash: [], fill: { target: 'origin', above: 'rgba(239,68,68,0.08)' } }
      ];
      if (exchangeTable) {
        chartDatasets.push({ label: 'Exchange Transfusion', data: generateThresholdCurve(exchangeTable), borderColor: '#7f1d1d', borderWidth: 2, borderDash: [6,3], fill: false });
      }
      renderBiliChart(hours, tsb, chartDatasets);
    });

    document.getElementById('btn-clear-bili-aap').addEventListener('click', function() {
      ['bili-ga', 'bili-age-hours', 'bili-tsb', 'bili-risk'].forEach(function(id) {
        var el = document.getElementById(id); if (el) el.value = '';
      });
      document.getElementById('bili-result').classList.add('hidden');
      var bc = document.getElementById('bili-chart-container'); if (bc) bc.classList.add('hidden');
    });

    // Bhutani nomogram zones (approximate hour-specific TSB boundaries)
    // High-risk zone: >= 95th percentile
    // High-intermediate: 75th-95th
    // Low-intermediate: 40th-75th
    // Low-risk: < 40th
    var bhutaniZones = {
      p95: { 24:8.0, 36:10.5, 48:12.5, 60:14.0, 72:15.0, 84:15.5, 96:16.5, 108:17.5, 120:18.0, 132:18.5, 144:19.0 },
      p75: { 24:6.0, 36:8.5, 48:10.5, 60:12.0, 72:13.0, 84:13.5, 96:14.0, 108:14.5, 120:15.0, 132:15.5, 144:15.5 },
      p40: { 24:4.5, 36:6.5, 48:8.5, 60:10.0, 72:11.0, 84:11.5, 96:12.0, 108:12.0, 120:12.5, 132:12.5, 144:12.5 }
    };

    document.getElementById('btn-calc-bhutani').addEventListener('click', function() {
      var hours = parseFloat(document.getElementById('bhutani-age').value);
      var tsb = parseFloat(document.getElementById('bhutani-tsb').value);
      if (isNaN(hours) || isNaN(tsb)) { showToast('Fill in all fields', 'error'); return; }

      var p95 = interpolateThreshold(bhutaniZones.p95, hours);
      var p75 = interpolateThreshold(bhutaniZones.p75, hours);
      var p40 = interpolateThreshold(bhutaniZones.p40, hours);

      var zone, cl;
      if (tsb >= p95)      { zone = 'High-Risk Zone'; cl = { color: '#ef4444', bg: '#fee2e2' }; }
      else if (tsb >= p75) { zone = 'High-Intermediate Zone'; cl = { color: '#f97316', bg: '#ffedd5' }; }
      else if (tsb >= p40) { zone = 'Low-Intermediate Zone'; cl = { color: '#f59e0b', bg: '#fef3c7' }; }
      else                 { zone = 'Low-Risk Zone'; cl = { color: '#10b981', bg: '#d1fae5' }; }

      var resultDiv = document.getElementById('bili-result');
      resultDiv.classList.remove('hidden');
      resultDiv.innerHTML =
        '<div class="calc-result-header" style="background:' + cl.bg + ';border-color:' + cl.color + ';">' +
          '<div style="font-size:18px;font-weight:700;color:' + cl.color + ';">' + zone + '</div>' +
          '<div style="font-size:13px;color:var(--g600);margin-top:4px;">TSB ' + tsb + ' mg/dL at ' + hours + ' hours of life</div>' +
        '</div>' +
        '<div class="calc-result-grid">' +
          '<div class="calc-result-item"><div class="calc-result-label">95th %ile</div><div class="calc-result-value" style="font-size:16px;color:#ef4444;">' + p95.toFixed(1) + '</div><div class="calc-result-sub">High-risk</div></div>' +
          '<div class="calc-result-item"><div class="calc-result-label">75th %ile</div><div class="calc-result-value" style="font-size:16px;color:#f97316;">' + p75.toFixed(1) + '</div><div class="calc-result-sub">High-intermediate</div></div>' +
          '<div class="calc-result-item"><div class="calc-result-label">40th %ile</div><div class="calc-result-value" style="font-size:16px;color:#f59e0b;">' + p40.toFixed(1) + '</div><div class="calc-result-sub">Low-intermediate</div></div>' +
        '</div>' +
        '<p style="font-size:11px;color:var(--g400);margin:12px 0 0;">Bhutani hour-specific nomogram for infants >= 35 weeks GA. Bhutani et al., Pediatrics 1999.</p>';

      // Chart: Bhutani zone curves with patient
      renderBiliChart(hours, tsb, [
        { label: '95th (High-Risk)', data: generateThresholdCurve(bhutaniZones.p95), borderColor: '#ef4444', borderWidth: 2, fill: false, borderDash: [] },
        { label: '75th (High-Intermed)', data: generateThresholdCurve(bhutaniZones.p75), borderColor: '#f97316', borderWidth: 1.5, fill: { target: '-1', above: 'rgba(239,68,68,0.08)' }, borderDash: [3,3] },
        { label: '40th (Low-Intermed)', data: generateThresholdCurve(bhutaniZones.p40), borderColor: '#f59e0b', borderWidth: 1.5, fill: { target: '-1', above: 'rgba(249,115,22,0.08)' }, borderDash: [3,3] }
      ]);
    });

    document.getElementById('btn-clear-bhutani').addEventListener('click', function() {
      ['bhutani-age', 'bhutani-tsb'].forEach(function(id) {
        var el = document.getElementById(id); if (el) el.value = '';
      });
      document.getElementById('bili-result').classList.add('hidden');
      var bc = document.getElementById('bili-chart-container'); if (bc) bc.classList.add('hidden');
    });

    // ═══════════════════════════════════════════════════════════
    // VITAL SIGNS — Interactive age selector
    // Harriet Lane Handbook 23rd Edition reference values
    // ═══════════════════════════════════════════════════════════

    var VITALS_DATA = {
      premie: {
        label: 'Premie',
        hr: { awake: '120-170', sleeping: '100-150' },
        rr: '40-70',
        sbp: '55-75', dbp: '35-45',
        temp: '36.5-37.5',
        weight: '0.5-2.5 kg',
        spo2: '88-95% (target)',
        notes: [
          'HR and RR are highly variable and depend on gestational age',
          'BP increases with gestational age and postnatal age',
          'Target SpO2 88-95% to reduce retinopathy of prematurity risk',
          'Temperature instability is common — use servo-controlled warmers',
          'Bradycardia (<100 bpm) and apnea are common in premature infants'
        ]
      },
      '0-3mo': {
        label: '0-3 Months',
        hr: { awake: '100-150', sleeping: '85-135' },
        rr: '35-55',
        sbp: '65-85', dbp: '45-55',
        temp: '36.5-37.5',
        weight: '2.5-6 kg',
        spo2: '>95%',
        notes: [
          'HR normally increases with crying (up to 180-190 bpm) — this is physiologic',
          'Periodic breathing (pauses <10 sec) is normal in neonates',
          'Acrocyanosis (blue hands/feet) is normal; central cyanosis is not',
          'BP is best measured in the right arm (pre-ductal) in neonates',
          'Normal weight loss of 5-7% in first 3-5 days; regain by 10-14 days'
        ]
      },
      '3-6mo': {
        label: '3-6 Months',
        hr: { awake: '90-120', sleeping: '75-110' },
        rr: '30-45',
        sbp: '70-90', dbp: '50-65',
        temp: '36.5-37.5',
        weight: '5-8 kg',
        spo2: '>95%',
        notes: [
          'Expected weight gain: 20-30 g/day (150-200 g/week)',
          'HR gradually decreases as vagal tone matures',
          'RR >60 at rest may indicate lower respiratory tract disease',
          'BP should be measured with appropriate cuff size (width 40% of arm circumference)'
        ]
      },
      '6-12mo': {
        label: '6-12 Months',
        hr: { awake: '80-120', sleeping: '70-110' },
        rr: '25-40',
        sbp: '80-100', dbp: '55-65',
        temp: '36.0-37.5',
        weight: '8-10 kg',
        spo2: '>95%',
        notes: [
          'Expected weight: triple birth weight by 12 months (~10 kg average)',
          'Weight gain slows to ~10-15 g/day',
          'Sinus arrhythmia (HR varies with breathing) is normal',
          'Febrile tachycardia: HR increases ~10 bpm per 1 degree C above 37'
        ]
      },
      '1-3yr': {
        label: '1-3 Years',
        hr: { awake: '70-110', sleeping: '60-100' },
        rr: '20-30',
        sbp: '90-105', dbp: '55-70',
        temp: '36.0-37.5',
        weight: '10-15 kg',
        spo2: '>95%',
        notes: [
          'Expected weight gain: ~200-250 g/month (2-2.5 kg/year)',
          'Tachycardia: HR >110 at rest warrants evaluation',
          'Tachypnea: RR >30 at rest may indicate respiratory distress',
          'BP screening begins at age 3 per AAP 2017 guidelines',
          'Estimated weight: 2 x (age in years) + 8'
        ]
      },
      '3-6yr': {
        label: '3-6 Years',
        hr: { awake: '65-110', sleeping: '55-100' },
        rr: '20-25',
        sbp: '95-110', dbp: '60-75',
        temp: '36.0-37.5',
        weight: '14-20 kg',
        spo2: '>95%',
        notes: [
          'Annual BP screening recommended from age 3',
          'Normal BP <90th percentile for age, sex, and height',
          'Elevated BP: 90th to <95th percentile (or 120/80 if lower)',
          'Estimated weight: 2 x (age in years) + 8',
          'ETT size (uncuffed): (age/4) + 4'
        ]
      },
      '6-12yr': {
        label: '6-12 Years',
        hr: { awake: '60-95', sleeping: '50-85' },
        rr: '14-22',
        sbp: '100-120', dbp: '60-75',
        temp: '36.0-37.5',
        weight: '20-40 kg',
        spo2: '>95%',
        notes: [
          'Resting HR >95 or <60 warrants evaluation',
          'BP should be measured at every clinical encounter',
          'Stage 1 HTN: >=95th percentile on 3 separate occasions',
          'Estimated weight: 3 x (age in years) + 7',
          'ETT size (cuffed): (age/4) + 3.5'
        ]
      },
      '>12yr': {
        label: '>12 Years',
        hr: { awake: '55-85', sleeping: '45-75' },
        rr: '12-18',
        sbp: '110-135', dbp: '65-85',
        temp: '36.0-37.5',
        weight: '40-80 kg',
        spo2: '>95%',
        notes: [
          'Vital signs approach adult values',
          'From age 13: use adult BP thresholds (AAP 2017)',
          'Normal: <120/<80 mmHg; Elevated: 120-129/<80 mmHg',
          'Stage 1 HTN: 130-139/80-89 mmHg; Stage 2 HTN: >=140/>=90 mmHg',
          'Orthostatic vitals: measure lying, sitting, standing if dizzy',
          'Athletic bradycardia (HR 45-60) may be normal in trained adolescents'
        ]
      }
    };

    // Use event delegation on the vitals panel so the listener works even
    // when the panel is hidden at init time (hidden elements are still in the DOM,
    // but a setTimeout-based approach can race with dynamic content loading).
    var vitalsPanel = document.getElementById('calc-vitals');
    if (vitalsPanel) {
      vitalsPanel.addEventListener('change', function(e) {
        if (e.target.id !== 'vitals-age-select') return;
        var key = e.target.value;
        var resultDiv = document.getElementById('vitals-result');
        if (!key || !VITALS_DATA[key]) { resultDiv.classList.add('hidden'); return; }

        var v = VITALS_DATA[key];
        resultDiv.classList.remove('hidden');
        resultDiv.innerHTML =
          '<div class="calc-result-header" style="background:#eff6ff;border-color:#2563eb;">' +
            '<div style="font-size:18px;font-weight:700;color:#1d4ed8;">' + v.label + '</div>' +
          '</div>' +
          '<div class="calc-result-grid" style="margin-top:12px;">' +
            '<div class="calc-result-item"><div class="calc-result-label">Heart Rate (awake)</div><div class="calc-result-value" style="font-size:18px;color:#ef4444;">' + v.hr.awake + '</div><div class="calc-result-sub">bpm</div></div>' +
            '<div class="calc-result-item"><div class="calc-result-label">Heart Rate (sleep)</div><div class="calc-result-value" style="font-size:18px;color:#8b5cf6;">' + v.hr.sleeping + '</div><div class="calc-result-sub">bpm</div></div>' +
            '<div class="calc-result-item"><div class="calc-result-label">Respiratory Rate</div><div class="calc-result-value" style="font-size:18px;color:#0ea5e9;">' + v.rr + '</div><div class="calc-result-sub">breaths/min</div></div>' +
            '<div class="calc-result-item"><div class="calc-result-label">Systolic BP</div><div class="calc-result-value" style="font-size:18px;color:#f97316;">' + v.sbp + '</div><div class="calc-result-sub">mmHg</div></div>' +
            '<div class="calc-result-item"><div class="calc-result-label">Diastolic BP</div><div class="calc-result-value" style="font-size:18px;color:#f59e0b;">' + v.dbp + '</div><div class="calc-result-sub">mmHg</div></div>' +
            '<div class="calc-result-item"><div class="calc-result-label">Temperature</div><div class="calc-result-value" style="font-size:18px;color:#10b981;">' + v.temp + '</div><div class="calc-result-sub">&deg;C</div></div>' +
            '<div class="calc-result-item"><div class="calc-result-label">SpO2</div><div class="calc-result-value" style="font-size:18px;color:#06b6d4;">' + v.spo2 + '</div><div class="calc-result-sub"></div></div>' +
            '<div class="calc-result-item"><div class="calc-result-label">Weight Range</div><div class="calc-result-value" style="font-size:18px;color:#6366f1;">' + v.weight + '</div><div class="calc-result-sub"></div></div>' +
          '</div>' +
          '<div style="margin-top:14px;padding:12px;background:var(--g50);border-radius:8px;">' +
            '<div style="font-size:12px;font-weight:600;color:var(--g600);margin-bottom:6px;">Clinical Notes</div>' +
            '<ul style="margin:0;padding-left:16px;font-size:12px;color:var(--g700);line-height:1.7;">' +
              v.notes.map(function(n) { return '<li>' + n + '</li>'; }).join('') +
            '</ul>' +
          '</div>';
      });
    }

    // ═══════════════════════════════════════════════════════════
    // RESUSCITATION MEDICATIONS — Johns Hopkins Kids Kard / AHA PALS 2020
    // ═══════════════════════════════════════════════════════════

    var RESUS_MEDS = [
      {
        name: 'Adenosine', indication: 'SVT', category: 'cardiac',
        route: 'IV/IO rapid bolus',
        calc: function(w) {
          var d1 = +(w * 0.1).toFixed(2);
          var d2 = +(w * 0.2).toFixed(2);
          var d3 = +(w * 0.3).toFixed(2);
          return {
            dose: d1 + ' mg (0.1 mg/kg)',
            extra: 'May repeat: ' + Math.min(d2, 12) + ' mg (0.2 mg/kg), then ' + Math.min(d3, 12) + ' mg (0.3 mg/kg)',
            max: 'Max first dose 6 mg, max subsequent 12 mg'
          };
        }
      },
      {
        name: 'Amiodarone', indication: 'VT / VF', category: 'cardiac',
        route: 'IV/IO',
        calc: function(w) {
          var d = +(w * 5).toFixed(1);
          return {
            dose: Math.min(d, 300) + ' mg (5 mg/kg)',
            extra: 'No pulse: push undiluted. Pulse: over 20-60 min. Subsequent max 150 mg.',
            max: 'Max first 300 mg, max total 15 mg/kg/24hr or 2200 mg'
          };
        }
      },
      {
        name: 'Atropine', indication: 'Bradycardia', category: 'cardiac',
        route: 'IV/IO/IM',
        calc: function(w) {
          var d = +(w * 0.02).toFixed(3);
          var ett = (w * 0.04).toFixed(3) + '-' + (w * 0.06).toFixed(3);
          return {
            dose: Math.min(d, 0.5) + ' mg (0.02 mg/kg)',
            extra: 'ETT dose: ' + ett + ' mg (0.04-0.06 mg/kg)',
            max: 'Max single 0.5 mg, max total 1 mg'
          };
        }
      },
      {
        name: 'Calcium Chloride 10%', indication: 'Hypocalcemia / Hyperkalemia', category: 'metabolic',
        route: 'IV/IO',
        calc: function(w) {
          var d = +(w * 20).toFixed(0);
          return {
            dose: Math.min(d, 1000) + ' mg (20 mg/kg)',
            extra: 'Give slowly. Central line preferred.',
            max: 'Max 1 g (1000 mg)'
          };
        }
      },
      {
        name: 'Calcium Gluconate 10%', indication: 'Hypocalcemia / Hyperkalemia', category: 'metabolic',
        route: 'IV/IO',
        calc: function(w) {
          var d = +(w * 60).toFixed(0);
          return {
            dose: Math.min(d, 3000) + ' mg (60 mg/kg)',
            extra: 'Give slowly over 10-20 min with cardiac monitoring.',
            max: 'Max 3 g (3000 mg)'
          };
        }
      },
      {
        name: 'Dextrose', indication: 'Hypoglycemia', category: 'metabolic',
        route: 'IV',
        calc: function(w) {
          var grams = +(w * 0.5).toFixed(1) + '-' + +(w * 1).toFixed(1);
          var detail = '';
          if (w < 5) {
            var ml = (w * 5).toFixed(1) + '-' + (w * 10).toFixed(1);
            detail = 'D10W: ' + ml + ' mL (5-10 mL/kg)';
          } else if (w < 45) {
            var ml = (w * 2).toFixed(1) + '-' + (w * 4).toFixed(1);
            detail = 'D25W: ' + ml + ' mL (2-4 mL/kg)';
          } else {
            var ml = (w * 1).toFixed(1) + '-' + (w * 2).toFixed(1);
            detail = 'D50W: ' + ml + ' mL (1-2 mL/kg)';
          }
          return {
            dose: grams + ' g (0.5-1 g/kg)',
            extra: detail,
            max: 'Max 25 g'
          };
        }
      },
      {
        name: 'Epinephrine', indication: 'Pulseless arrest / Anaphylaxis', category: 'cardiac',
        route: 'IV/IO/IM/ETT',
        calc: function(w) {
          var iv = +(w * 0.01).toFixed(3);
          var ivVol = +(w * 0.1).toFixed(2);
          var ett = +(w * 0.1).toFixed(2);
          var im = +(w * 0.01).toFixed(3);
          return {
            dose: Math.min(iv, 1) + ' mg IV/IO (0.01 mg/kg of 0.1 mg/mL = ' + Math.min(ivVol, 10) + ' mL) q3-5 min',
            extra: 'ETT: ' + Math.min(ett, 2.5) + ' mg (0.1 mg/kg of 1 mg/mL). Anaphylaxis IM: ' + Math.min(im, 0.5) + ' mg (0.01 mg/kg)',
            max: 'Max IV 1 mg, max ETT 2.5 mg, max IM 0.5 mg'
          };
        }
      },
      {
        name: 'Hydrocortisone', indication: 'Adrenal crisis', category: 'metabolic',
        route: 'IV/IM/IO',
        calc: function(w) {
          var d = +(w * 2).toFixed(1);
          return {
            dose: Math.min(d, 100) + ' mg (2 mg/kg)',
            extra: 'Stress dosing for adrenal insufficiency.',
            max: 'Max 100 mg'
          };
        }
      },
      {
        name: 'Insulin (Regular)', indication: 'Hyperkalemia', category: 'metabolic',
        route: 'IV',
        calc: function(w) {
          var d = +(w * 0.1).toFixed(2);
          var dex = +(w * 0.5).toFixed(1);
          return {
            dose: Math.min(d, 5) + ' units (0.1 units/kg)',
            extra: 'Give with ' + dex + ' g/kg dextrose (0.5 g/kg). Monitor glucose closely.',
            max: 'Max 5 units'
          };
        }
      },
      {
        name: 'Lidocaine', indication: 'Antiarrhythmic', category: 'cardiac',
        route: 'IV/IO',
        calc: function(w) {
          var d = +(w * 1).toFixed(1);
          var ett = (w * 2).toFixed(1) + '-' + (w * 3).toFixed(1);
          return {
            dose: Math.min(d, 100) + ' mg (1 mg/kg)',
            extra: 'ETT: ' + ett + ' mg (2-3 mg/kg). May repeat q5 min.',
            max: 'Max 100 mg/dose, max total 3 mg/kg'
          };
        }
      },
      {
        name: 'Magnesium Sulfate', indication: 'Torsades de Pointes', category: 'cardiac',
        route: 'IV/IO',
        calc: function(w) {
          var d = +(w * 50).toFixed(0);
          return {
            dose: Math.min(d, 2000) + ' mg (50 mg/kg)',
            extra: 'Give over 10-20 min (faster if pulseless).',
            max: 'Max 2 g (2000 mg)'
          };
        }
      },
      {
        name: 'Naloxone', indication: 'Opioid overdose', category: 'reversal',
        route: 'IV/IO/IM/IN/ETT',
        calc: function(w) {
          var partial = +(w * 0.001).toFixed(4) + '-' + +(w * 0.005).toFixed(4);
          var full = +(w * 0.1).toFixed(3);
          return {
            dose: 'Partial: ' + partial + ' mg (0.001-0.005 mg/kg)',
            extra: 'Full reversal: ' + Math.min(full, 2) + ' mg (0.1 mg/kg)',
            max: 'Max partial first dose 0.1 mg, max full 2 mg'
          };
        }
      },
      {
        name: 'Sodium Bicarbonate', indication: 'Metabolic acidosis', category: 'metabolic',
        route: 'IV/IO',
        calc: function(w) {
          var d = +(w * 1).toFixed(1);
          return {
            dose: Math.min(d, 50) + ' mEq (1 mEq/kg)',
            extra: w < 10 ? 'Dilute to 0.5 mEq/mL (use 4.2% solution) for neonates/small infants.' : 'Use 8.4% solution (1 mEq/mL).',
            max: 'Max 50 mEq'
          };
        }
      }
    ];

    var categoryColors = { cardiac: '#ef4444', metabolic: '#3b82f6', reversal: '#10b981' };
    var categoryLabels = { cardiac: 'Cardiac', metabolic: 'Metabolic', reversal: 'Reversal' };

    // Use event delegation for resus panel
    var resusPanel = document.getElementById('calc-resus');
    if (resusPanel) {
      resusPanel.addEventListener('click', function(e) {
        var btn = e.target.closest('#btn-calc-resus, #btn-clear-resus');
        if (!btn) return;

        if (btn.id === 'btn-clear-resus') {
          var wi = document.getElementById('resus-weight'); if (wi) wi.value = '';
          var rd = document.getElementById('resus-result'); if (rd) { rd.classList.add('hidden'); rd.innerHTML = ''; }
          return;
        }

        // Calculate
        var weightEl = document.getElementById('resus-weight');
        var resultDiv = document.getElementById('resus-result');
        var w = parseFloat(weightEl.value);
        if (!w || w <= 0) { alert('Please enter a valid weight.'); return; }

        var html = '<div style="margin-bottom:12px;font-size:14px;font-weight:700;color:var(--g800);">Doses for ' + w + ' kg patient</div>';
        html += '<div style="display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px;font-size:11px;">';
        Object.keys(categoryColors).forEach(function(cat) {
          html += '<span style="display:inline-flex;align-items:center;gap:4px;"><span style="width:10px;height:10px;border-radius:50%;background:' + categoryColors[cat] + ';display:inline-block;"></span>' + categoryLabels[cat] + '</span>';
        });
        html += '</div>';
        html += '<div style="display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:12px;">';

        RESUS_MEDS.forEach(function(med) {
          var r = med.calc(w);
          var color = categoryColors[med.category] || '#6b7280';
          html += '<div style="border:1.5px solid ' + color + '33;border-radius:10px;overflow:hidden;background:#fff;">' +
            '<div style="padding:10px 14px;background:' + color + '0d;border-bottom:1px solid ' + color + '22;">' +
              '<div style="font-size:14px;font-weight:700;color:' + color + ';">' + med.name + '</div>' +
              '<div style="font-size:11px;color:var(--g500);margin-top:2px;">' + med.indication + '</div>' +
            '</div>' +
            '<div style="padding:12px 14px;font-size:13px;">' +
              '<div style="margin-bottom:6px;"><strong>Dose:</strong> ' + r.dose + '</div>' +
              '<div style="margin-bottom:6px;font-size:12px;color:var(--g600);">' + r.extra + '</div>' +
              '<div style="font-size:11px;color:var(--g500);"><strong>Max:</strong> ' + r.max + '</div>' +
              '<div style="font-size:11px;color:var(--g400);margin-top:4px;"><strong>Route:</strong> ' + med.route + '</div>' +
            '</div>' +
          '</div>';
        });

        html += '</div>';
        html += '<div style="margin-top:14px;padding:10px;background:#fef3c7;border-radius:8px;font-size:11px;color:#92400e;">' +
          '<strong>Disclaimer:</strong> Always verify doses against institutional protocols and current guidelines. This tool is for educational reference only.' +
        '</div>';

        resultDiv.innerHTML = html;
        resultDiv.classList.remove('hidden');
      });
    }

    // ═══════════════════════════════════════════════════════════
    // GLASGOW COMA SCALE
    // ═══════════════════════════════════════════════════════════

    // GCS sub-pill navigation
    var gcsPanel = document.getElementById('calc-gcs');
    if (gcsPanel) {
      gcsPanel.addEventListener('click', function(e) {
        var pill = e.target.closest('[data-gcs]');
        if (!pill) return;
        gcsPanel.querySelectorAll('[data-gcs]').forEach(function(p) { p.classList.remove('active'); });
        pill.classList.add('active');
        var isInfant = pill.dataset.gcs === 'infant';
        var childP = document.getElementById('gcs-child-panel');
        var infantP = document.getElementById('gcs-infant-panel');
        if (childP) childP.style.display = isInfant ? 'none' : '';
        if (infantP) infantP.style.display = isInfant ? '' : 'none';
        updateGCS();
      });

      gcsPanel.addEventListener('change', function(e) {
        if (e.target.tagName === 'SELECT') updateGCS();
      });
    }

    function updateGCS() {
      var isInfant = document.querySelector('[data-gcs="infant"].active') !== null;
      var prefix = isInfant ? 'gcs-infant' : 'gcs-child';
      var eye = parseInt(document.getElementById(prefix + '-eye').value) || 0;
      var verbal = parseInt(document.getElementById(prefix + '-verbal').value) || 0;
      var motor = parseInt(document.getElementById(prefix + '-motor').value) || 0;
      var total = eye + verbal + motor;

      var severity, color, bg;
      if (total <= 8)       { severity = 'Severe (Coma)'; color = '#ef4444'; bg = '#fee2e2'; }
      else if (total <= 12) { severity = 'Moderate'; color = '#f59e0b'; bg = '#fef3c7'; }
      else                  { severity = 'Mild'; color = '#10b981'; bg = '#d1fae5'; }

      var resultDiv = document.getElementById('gcs-result');
      if (resultDiv) {
        resultDiv.innerHTML =
          '<div class="calc-result-header" style="background:' + bg + ';border-color:' + color + ';">' +
            '<div style="font-size:24px;font-weight:700;color:' + color + ';">GCS: ' + total + '/15</div>' +
            '<div style="font-size:14px;color:var(--g600);margin-top:4px;">' + severity + '</div>' +
          '</div>' +
          '<div class="calc-result-grid" style="margin-top:12px;">' +
            '<div class="calc-result-item"><div class="calc-result-label">Eye (E)</div><div class="calc-result-value">' + eye + '</div></div>' +
            '<div class="calc-result-item"><div class="calc-result-label">Verbal (V)</div><div class="calc-result-value">' + verbal + '</div></div>' +
            '<div class="calc-result-item"><div class="calc-result-label">Motor (M)</div><div class="calc-result-value">' + motor + '</div></div>' +
          '</div>' +
          '<div style="margin-top:12px;font-size:12px;color:var(--g500);">' +
            '<strong>Interpretation:</strong> 13-15 Mild, 9-12 Moderate, 3-8 Severe/Coma. ' +
            'Intubation typically considered at GCS &le; 8. ' +
            (isInfant ? 'Using infant-modified verbal and motor scales.' : '') +
          '</div>';
      }
    }
    // Initial GCS render
    setTimeout(updateGCS, 200);

    // ═══════════════════════════════════════════════════════════
    // EQUIPMENT SIZING — Johns Hopkins Kids Kard
    // ═══════════════════════════════════════════════════════════

    var EQUIP_DATA = {
      premie: {
        label: 'Premie (1-3 kg)',
        bvm: 'Infant', nasal: '12 Fr', oral: 'Infant', blade: 'Miller 0',
        ett: '2.5-3.0', lma: '1', glidescope: '1',
        iv: '22-24 ga', cvl: '3 Fr', ngt: '5 Fr', chest: '10-12 Fr', foley: '6 Fr'
      },
      newborn: {
        label: 'Newborn (2-4 kg)',
        bvm: 'Infant', nasal: '14-16 Fr', oral: 'Small 50 mm', blade: 'Miller 0',
        ett: '3.0-3.5', lma: '1', glidescope: '1',
        iv: '22-24 ga', cvl: '3-4 Fr', ngt: '5-8 Fr', chest: '10-12 Fr', foley: '6 Fr'
      },
      '6mo': {
        label: '6 months (6-8 kg)',
        bvm: 'Infant', nasal: '14-16 Fr', oral: 'Small 60 mm', blade: 'Miller 1',
        ett: '3.5', lma: '1.5', glidescope: '2',
        iv: '20-24 ga', cvl: '4 Fr', ngt: '8 Fr', chest: '12-18 Fr', foley: '8 Fr'
      },
      '1yr': {
        label: '1 year (10 kg)',
        bvm: 'Small child', nasal: '14-18 Fr', oral: 'Small 60 mm', blade: 'Miller 1 / MAC 2',
        ett: '4.0', lma: '2', glidescope: '2',
        iv: '20-24 ga', cvl: '4-5 Fr', ngt: '10 Fr', chest: '16-20 Fr', foley: '8 Fr'
      },
      '2-3yr': {
        label: '2-3 years (12-16 kg)',
        bvm: 'Small child', nasal: '14-18 Fr', oral: 'Small 70 mm', blade: 'Miller 1 / MAC 2',
        ett: '4.0-4.5', lma: '2', glidescope: '2',
        iv: '18-22 ga', cvl: '4-5 Fr', ngt: '10-12 Fr', chest: '16-24 Fr', foley: '8 Fr'
      },
      '4-6yr': {
        label: '4-6 years (20-25 kg)',
        bvm: 'Child', nasal: '16-20 Fr', oral: 'Small 70-80 mm', blade: 'Miller 2 / MAC 2',
        ett: '4.5-5.0', lma: '2.5', glidescope: '3',
        iv: '18-22 ga', cvl: '5 Fr', ngt: '12-14 Fr', chest: '20-28 Fr', foley: '8 Fr'
      },
      '7-10yr': {
        label: '7-10 years (25-35 kg)',
        bvm: 'Child / Small adult', nasal: '18-22 Fr', oral: 'Medium 80-90 mm', blade: 'Miller 2 / MAC 2',
        ett: '5.5-6.0', lma: '2.5-3', glidescope: '3',
        iv: '18-22 ga', cvl: '5 Fr', ngt: '12-14 Fr', chest: '20-32 Fr', foley: '8 Fr'
      },
      '11-15yr': {
        label: '11-15 years (40-50 kg)',
        bvm: 'Adult', nasal: '22-36 Fr', oral: 'Medium 90 mm', blade: 'Miller 2 / MAC 3',
        ett: '6.0-6.5', lma: '3', glidescope: '3 or 4',
        iv: '18-20 ga', cvl: '7 Fr', ngt: '14-18 Fr', chest: '28-38 Fr', foley: '10 Fr'
      },
      '16yr': {
        label: '16+ years (>50 kg)',
        bvm: 'Adult', nasal: '22-36 Fr', oral: 'Medium 90 mm', blade: 'Miller 2 / MAC 3',
        ett: '7.0-8.0', lma: '4', glidescope: '3 or 4',
        iv: '18-20 ga', cvl: '7 Fr', ngt: '14-18 Fr', chest: '28-42 Fr', foley: '12 Fr'
      }
    };

    var equipPanel = document.getElementById('calc-equipment');
    if (equipPanel) {
      equipPanel.addEventListener('change', function(e) {
        if (e.target.id !== 'equip-age-select') return;
        var key = e.target.value;
        var resultDiv = document.getElementById('equip-result');
        if (!key || !EQUIP_DATA[key]) { resultDiv.classList.add('hidden'); return; }

        var eq = EQUIP_DATA[key];
        resultDiv.classList.remove('hidden');
        resultDiv.innerHTML =
          '<div class="calc-result-header" style="background:#eff6ff;border-color:#2563eb;">' +
            '<div style="font-size:18px;font-weight:700;color:#1d4ed8;">' + eq.label + '</div>' +
          '</div>' +
          '<div style="margin-top:12px;overflow-x:auto;">' +
            '<table class="admin-table" style="font-size:13px;width:100%;">' +
              '<tbody>' +
                '<tr><td style="font-weight:600;width:40%;">Bag-Valve Mask</td><td>' + eq.bvm + '</td></tr>' +
                '<tr><td style="font-weight:600;">Oral Airway</td><td>' + eq.oral + '</td></tr>' +
                '<tr><td style="font-weight:600;">Nasal Airway</td><td>' + eq.nasal + '</td></tr>' +
                '<tr><td style="font-weight:600;">Laryngoscope Blade</td><td>' + eq.blade + '</td></tr>' +
                '<tr><td style="font-weight:600;">ETT Size</td><td>' + eq.ett + '</td></tr>' +
                '<tr><td style="font-weight:600;">LMA Size</td><td>' + eq.lma + '</td></tr>' +
                '<tr><td style="font-weight:600;">Glidescope</td><td>' + eq.glidescope + '</td></tr>' +
                '<tr><td style="font-weight:600;">IV Catheter</td><td>' + eq.iv + '</td></tr>' +
                '<tr><td style="font-weight:600;">Central Line</td><td>' + eq.cvl + '</td></tr>' +
                '<tr><td style="font-weight:600;">NGT / OGT</td><td>' + eq.ngt + '</td></tr>' +
                '<tr><td style="font-weight:600;">Chest Tube</td><td>' + eq.chest + '</td></tr>' +
                '<tr><td style="font-weight:600;">Foley Catheter</td><td>' + eq.foley + '</td></tr>' +
              '</tbody>' +
            '</table>' +
          '</div>' +
          '<div style="margin-top:10px;font-size:11px;color:var(--g400);">' +
            '<strong>ETT Formulas:</strong> Uncuffed = (age/4)+4, Cuffed = (age/4)+3, Depth = ETT size x 3. ' +
            'Source: Johns Hopkins Kids Kard.' +
          '</div>';
      });
    }
  }
})();