growth_standards

Description:

growth standards

Various Growth Standards implementation in Dart #
Example below #
import 'dart:convert';

import 'package:growth_standards/growth_standards.dart';

final birthDay = Date(year: 2022, month: Months.june, date: 30);
const weight = 12.1;
const length = 82;

const centimeters = Centimeters(length);
const kilograms = Kilograms(weight);
final age = Age.byDate(birthDay);

final gs = GrowthStandard.whoGrowthStandard;
final gsFromJson = gs.fromJson;
const sex = Sex.male;

void main() {
print(
'Age: ${age.yearsMonthsDaysOfAge.years} Years, ${age.yearsMonthsDaysOfAge.months} Months, ${age.yearsMonthsDaysOfAge.days} Days, with total ${age.ageInTotalMonthsByNow} in Months or ${age.ageInTotalDaysByNow} in Days',
);
// Demonstrating adjusted zscore calculation
final calcLengthForAgeStanding = gs.lengthForAge(
age: age,
lengthHeight: centimeters,
sex: sex,
measure: LengthHeigthMeasurementPosition.standing,
);
print(calcLengthForAgeStanding.zScore(Precision.two));
print(calcLengthForAgeStanding.percentile(Precision.two));
final encode = json.encode(calcLengthForAgeStanding.toJson());
print(encode);
print(gsFromJson.lengthForAge(json.encode(encode) as Map<String, dynamic>));

final calcLengthForAgeRecumbent = calcLengthForAgeStanding.copyWith(
measure: LengthHeigthMeasurementPosition.recumbent,
);
print(calcLengthForAgeRecumbent.zScore(Precision.two));
print(calcLengthForAgeRecumbent.percentile(Precision.two));
print(json.encode(calcLengthForAgeRecumbent.toJson()));

final calcWeigthForAge = gs.weightForAge(
age: age,
weight: kilograms,
sex: sex,
);
print(calcWeigthForAge.zScore(Precision.two));
print(calcWeigthForAge.percentile(Precision.two));
print(json.encode(calcWeigthForAge.toJson()));

final calcWeigthForLength = gs.weightForLength(
lengthMeasurementResult: centimeters,
massMeasurementResult: kilograms,
sex: sex,
age: age,
measure: LengthHeigthMeasurementPosition.recumbent,
);
print(calcWeigthForLength.zScore(Precision.two));
print(calcWeigthForLength.percentile(Precision.two));
print(json.encode(calcWeigthForLength.toJson()));

final calcBMIForAge = gs.bodyMassIndexForAge(
bodyMassIndexMeasurement: BodyMassIndexMeasurement.fromMeasurement(
measure: LengthHeigthMeasurementPosition.recumbent,
lengthHeight: centimeters,
weight: kilograms,
age: age,
),
sex: sex,
);

print(calcBMIForAge.zScore(Precision.two));
print(calcBMIForAge.percentile(Precision.two));
print(json.encode(calcBMIForAge.toJson()));
}
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For updated example and usage check the test and example #
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