get_wfh_pchart: Extract weight-for-length/height percentile data

In nutriverse/nutricheckr: Tools for Nutrition Assessment and Analysis

Extract weight-for-length/height percentile data

Description

Function to extract weight-for-length/height percentile data from the World Health Organization (WHO) website on Child Growth Standards http://www.who.int/childgrowth/standards/" which contains a collection of reference data from the WHO Multicentre Growth Reference Study (MGRS). This function extracts the expanded data provided by WHO for creating growth charts for weight-for-length/height percentiles.

Usage

get_wfh_pchart(
  baseurl = "http://www.who.int/childgrowth/standards/",
  gender = c("boys", "girls")
)

Arguments

baseurl	Character value for the base URL of the WHO Child Growth Standards. The default is http://www.who.int/childgrowth/standards/. This can be adjusted should WHO change the base URL for the Child Growth Standards section of their website.
gender	A character value or vector that specifies the sex-specific reference data to extract. The default is c("boys", "girls").

Value

A data frame in tidy format with 7 coloumns and 36060 rows:

sex

Sex of child. 1 = boy; 2 = girl

lh

Length/height (in centimetres) of child in months.

l

L component of the LMS method for normalising growth centile standards. L is the trend in the optimal power to obtain normality

m

M component of the LMS method for normalising growth centile standards. M is the trend in the mean

s

S component of the LMS method for normalising growth centile standards. S is the trend in the coefficient of variation

p_type

Type of z-score. Can be one of 0.10th, 1st, 3rd, 5th, 10th, 15th, 25th, 50th, 75th, 85th, 90th, 95th, 97th, 99th and 99.9th

p_value

Weight (kgs) value for the specified p_type

Author(s)

Ernest Guevarra

Examples

# Get weight-for-length/height percentile expanded tables for charting
#get_wfh_pchart()

nutriverse/nutricheckr documentation built on April 1, 2022, 7:44 p.m.