getWGSR: Calculate WHO Growth Reference z-score for a given...
In zscorer: Child Anthropometry z-Score Calculator

Description Usage Arguments Value Examples

This function is usually called by the addWGSR() function but could be used as a stand-alone calculator for getting z-score for a given anthropometric measurement.

1 2	getWGSR(sex, firstPart, secondPart, index = NA, standing = NA, thirdPart = NA)

`sex`	Sex of the subject. This must be coded as `1 = male` and `2 = female`.
`firstPart`	Name of variable specifying: Weight (kg) for BMI/A, W/A, W/H, or W/L Head circumference (cm) for HC/A Height (cm) for BMI/A for H/A Length (cm) for L/A MUAC (cm) for MUAC/A Sub-scapular skinfold (mm) for SSF/A Triceps skinfold (mm) for TSF/A Give a quoted variable name as in (e.g.) `"weight"`. Be careful with units (weight in kg; height, length, head circumference, and MUAC in cm, skinfolds in mm).
`secondPart`	Name of variable specifying: Age (days) for H/A, HC/A, L/A, MUAC/A, SSF/A, or TSF/A Height (cm) BMI/A or W/H Length (cm) for W/L Give a quoted variable name as in (e.g.) `"age"`. Be careful with units (age in days; height and length in cm).
`index`	The index to be calculated and added to `data`. One of: `bfa` BMI for age `hca` Head circumference for age `hfa` Height for age `lfa` Length for age `mfa` MUAC for age `ssa` Sub-scapular skinfold for age `tsa` Triceps skinfold for age `wfa` Weight for age `wfh` Weight for height `wfl` Weight for length Give a quoted index name as in (e.g.) `"wfh"`.
`standing`	Variable specifying how stature was measured. If NULL 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`. All other values will be recoded to `3 = Unknown`. Give a quoted variable name as in (e.g.) `"measured"` or a single value (e.g.`"measured = 1"`). If no value (or NULL) is specified then height and age rules will be applied. zz
`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).

A numeric value or vector of z-scores for the specified index.

# Given a male child 10 months old with a weight of 5.7 kgs, height of 64.2
# cms, and MUAC of 125 mm:
#
# Calculate weight-for-height
getWGSR(sex = 1,
        firstPart = 5.7,
        secondPart = 64.2,
        index = "wfh",
        standing = 3)

# calculate weight-for-age
getWGSR(sex = 1,
        firstPart = 5.7,
        secondPart = 10,
        index = "wfa",
        standing = 3)

# calculate height-for-age
getWGSR(sex = 1,
        firstPart = 64.2,
        secondPart = 10,
        index = "hfa",
        standing = 3)

# Calculate MUAC-for-age z-score for a girl
getWGSR(sex = 1,
        firstPart = 20,
        secondPart = 62 * (365.25 / 12),
        index = "mfa")