README.md

In simisc/whozr: Convert Raw Anthrops to WHO Z-Scores

whozr

Convert raw anthropometric measurement (weight, height, length, BMI, MUAC, head circumeference, tricep skinfold and subscapular skinfold) to z-scores, using the WHO growth standards (0-5 years) and/or references (5-19 years).

Also allows the ‘reverse’ calculation of original anthropometry measures from z-scores (requires further testing).

Installation

You can install whozr from github with:

# install.packages("remotes")
remotes::install_github("simisc/whozr")

Example

library(dplyr) # tibble(), mutate()
library(knitr) # kable()
library(whozr) # zwa(), zla(), zwl()

tibble(
    sex = c("F", "M", "M", "F"),
    age_days = c(120, 310, 370, 460),
    weight_kg = c(5.98, 8.09, 8.40, 8.46),
    length_cm = c(60.2, 70.7, 72.6, 74.9)
) |>
    mutate(
        waz = zwa(weight_kg, age_days, sex),
        laz = zla(length_cm, age_days, sex),
        wlz = zwl(weight_kg, length_cm, sex)
    ) |>
    kable(digits = 3)

| sex | age_days | weight_kg | length_cm | waz | laz | wlz | | :-- | --------: | ---------: | ---------: | ------: | ------: | ------: | | F | 120 | 5.98 | 60.2 | -0.539 | -0.818 | 0.101 | | M | 310 | 8.09 | 70.7 | -1.186 | -1.229 | -0.723 | | M | 370 | 8.40 | 72.6 | -1.296 | -1.398 | -0.846 | | F | 460 | 8.46 | 74.9 | -1.065 | -0.996 | -0.859 |

simisc/whozr documentation built on March 24, 2023, 5:14 p.m.