getWGSRDS {dsBase} | R Documentation |
Calculate WHO Growth Reference z-score for a given anthropometric measurement
This function is similar to R function getWGSR
from the zscorer
package.
getWGSRDS(sex, firstPart, secondPart, index, standing = NA, thirdPart = NA)
sex |
the name of the binary variable that indicates the sex of the subject. This must
be coded as 1 = male and 2 = female. If in your project the variable sex has different
levels, you should recode the levels to 1 for males and 2 for females using the
|
firstPart |
Name of variable specifying: |
secondPart |
Name of variable specifying: |
index |
The index to be calculated and added to data. One of: |
standing |
Variable specifying how stature was measured. If NA (default) then age (for "hfa" or "lfa") or height rules (for "wfh" or "wfl") will be applied. This must be coded as 1 = Standing; 2 = Supine; 3 = Unknown. Missing values will be recoded to 3 = Unknown. Give a single value (e.g."1"). If no value is specified then height and age rules will be applied. |
thirdPart |
Name of variable specifying age (in days) for BMI/A. Give a quoted variable name as in (e.g.) "age". Be careful with units (age in days). |
The function computes the WHO Growth Reference z-scores of anthropometric data for weight, height or length, MUAC, head circumference, sub-scapular skinfold and triceps skinfold. Note that the function might fail or return NAs when the variables are outside the ranges given in the WGS (WHO Child Growth Standards) reference (i.e. 45 to 120 cm for height and 0 to 60 months for age). It is up to the user to check the ranges and the units of their data.
ds.getWGSR
assigns a numeric vector that includes the z-scores for the
specified index.
Demetris Avraam for DataSHIELD Development Team