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The AGD package implements various tools that aid in the analysis of growth data.
The AGD package can be installed from CRAN as follows:
The latest version is can be installed from GitHub as follows:
library(AGD)
# What is the SDS of a height of 115 cm at age 5 years
# relative to Dutch references?
# Calculate for boys and girls:
y2z(y = c(115, 115), x = 5, sex = c("M", "F"))
#> [1] 0.424 0.706
# What are the SDS of the IOTF BMI cut-off values for
# overweight (boys 2-18) relative to Dutch references?
cutoff <- c(
18.41, 17.89, 17.55, 17.42, 17.55, 17.92, 18.44, 19.10,
19.84, 20.55, 21.22, 21.91, 22.62, 23.29, 23.90, 24.46,
25.00)
age <- 2:18
z <- y2z(y = cutoff, x = 2:18, sex = "M", ref = nl4.bmi)
plot(age, z, type = "b", xlab = "Age (years",
ylab = "SDS IOTF (on Dutch reference)")These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.