public void CalculateZScoresWho2007()
{
var who2007 = new AnthStat.Statistics.WHO2007();
double ageMonths = double.Parse(TxtEdadMeses.Text);
double Weight = double.Parse(TxtPeso.Text);
double Lenght = double.Parse(TxtTalla.Text);
double LenghtMeters = Lenght / 100;
double imc = Weight / (LenghtMeters * LenghtMeters);
double z = 0.0;
double x = 0.0;
double y = 0.0;
TxtIMCCalculado.Text = Math.Round(imc, 2).ToString();
if (txtSexo.Text == "Masculino" || txtSexo.Text == "Masculino\t")
{
if (who2007.TryCalculateZScore(indicator: Indicator.BodyMassIndexForAge, measurement: imc, age: ageMonths, sex: Sex.Male, z: ref z))
{
double p = StatisticsHelper.CalculatePercentile(z);
TxtIMCEdadWho2007Z.Text = Math.Round(z, 2).ToString();
TxtIMCEdadWho2007P.Text = Math.Round(p, 2).ToString();
}
if (who2007.TryCalculateZScore(indicator: Indicator.WeightForAge, measurement: Weight, age: ageMonths, sex: Sex.Male, z: ref x))
{
double p = StatisticsHelper.CalculatePercentile(x);
TxtPesoEdadWho2007Z.Text = Math.Round(x, 2).ToString();
TxtPesoEdadWho2007P.Text = Math.Round(p, 2).ToString();
}
if (who2007.TryCalculateZScore(indicator: Indicator.HeightForAge, measurement: Lenght, age: ageMonths, sex: Sex.Male, z: ref y))
{
double p = StatisticsHelper.CalculatePercentile(y);
TxtTallaEdadWho2007Z.Text = Math.Round(y, 2).ToString();
TxtTallaEdadWho2007P.Text = Math.Round(p, 2).ToString();
}
}
else if (txtSexo.Text == "Femenino" || txtSexo.Text == "Femenino\t")
{
if (who2007.TryCalculateZScore(indicator: Indicator.BodyMassIndexForAge, measurement: imc, age: ageMonths, sex: Sex.Female, z: ref z))
{
double p = StatisticsHelper.CalculatePercentile(z);
TxtIMCEdadWho2007Z.Text = Math.Round(z, 2).ToString();
TxtIMCEdadWho2007P.Text = Math.Round(p, 2).ToString();
}
if (who2007.TryCalculateZScore(indicator: Indicator.WeightForAge, measurement: Weight, age: ageMonths, sex: Sex.Female, z: ref x))
{
double p = StatisticsHelper.CalculatePercentile(x);
TxtPesoEdadWho2007Z.Text = Math.Round(x, 2).ToString();
TxtPesoEdadWho2007P.Text = Math.Round(p, 2).ToString();
}
if (who2007.TryCalculateZScore(indicator: Indicator.HeightForAge, measurement: Lenght, age: ageMonths, sex: Sex.Female, z: ref y))
{
double p = StatisticsHelper.CalculatePercentile(y);
TxtTallaEdadWho2007Z.Text = Math.Round(y, 2).ToString();
TxtTallaEdadWho2007P.Text = Math.Round(p, 2).ToString();
}
}
}
private static void TestWHO2007ComputeSpeed(bool forceInterpolate)
{
var who2007 = new AnthStat.Statistics.WHO2007();
var sw = new System.Diagnostics.Stopwatch();
var rnd = new System.Random();
int loopIterations = 1_000_000;
double [] ageMonths = new double[loopIterations];
double [] bmis = new double[loopIterations];
Sex [] sexes = new Sex[loopIterations];
for (int i = 0; i < loopIterations; i++)
{
ageMonths[i] = rnd.Next(61, 228);
if (forceInterpolate)
{
ageMonths[i] += 0.25;
}
bmis[i] = rnd.NextDouble() * 25;
sexes[i] = ageMonths[i] % 2 == 0 ? Sex.Female : Sex.Male;
}
sw.Start();
for (int i = 0; i < loopIterations; i++)
{
double z = 0.0;
bool success = who2007.TryCalculateZScore(indicator: Indicator.BodyMassIndexForAge, measurement: bmis[i], age: ageMonths[i], sex: sexes[i], z: ref z);
}
sw.Stop();
Console.WriteLine($"[WHO 2007] - Computed {loopIterations} z-scores in {sw.Elapsed.TotalMilliseconds.ToString("N0")} milliseconds [interpolate = {forceInterpolate}]");
}