derive_var_age_years: Derive Age in Years

In epijim/admiral: ADaM in R Asset Library

Description

Derive Age in Years

Usage

derive_var_age_years(dataset, age_var, age_unit = NULL, new_var)

Arguments

dataset	Input dataset.
age_var	AGE variable.
age_unit	AGE unit variable. The AGE unit variable is used to convert AGE to 'years' so that grouping can occur. This is only used when the age_var variable does not have a corresponding unit in the dataset. Default: NULL Permitted Values: 'years', 'months', 'weeks', 'days', 'hours', 'minutes', 'seconds'
new_var	New AGE variable to be created in years.

Details

This function is used to convert age variables into years. These can then be used to create age groups.

Value

The input dataset with new_var paramater added in years.

Author(s)

Michael Thorpe

Examples

library(dplyr, warn.conflicts = FALSE)

data <- data.frame(AGE = c(27, 24, 3, 4, 1),
                   AGEU = c("days", "months", "years", "weeks", "years"))

data %>%
     derive_var_age_years(., AGE, new_var = AAGE)

data.frame(AGE = c(12, 24, 36, 48)) %>%
 derive_var_age_years(., AGE, age_unit = "months", new_var = AAGE)

epijim/admiral documentation built on Feb. 13, 2022, 12:15 a.m.