get_tsfa_zchart | R Documentation |
Function to extract triceps skinfold-for-age z-score 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 tricpes skinfold-for-age z-scores.
get_tsfa_zchart( baseurl = "http://www.who.int/childgrowth/standards/", gender = c("boys", "girls") )
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 |
A data frame in tidy format with 5 coloumns and 31788 rows:
sex
Sex of child. 1 = boy; 2 = girl
month
Age of child in months. This is calculated from the original data using that data for age of child in days
day
Age of child in days. This is provided for by default in the original data
sd_type
Type of z-score. Can be one of 4SD
, 3SD
,
2SD
, 1SD
, 0
, -1SD
, -2SD
, -3SD
,
-4SD
sd_value
Tricepts skinfold (in centimetres) value for the
specified sd_type
Ernest Guevarra
# Get triceps skinfold-for-age z-score expanded tables for charting #get_tsfa_zchart()
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