Converts the age27 variable in MCOD data to 5-year age groups

Usage

convert_ager27(icd_df, remove_age27 = TRUE)

Arguments

icd_df: an MCOD dataframe with age27 as a column
remove_age27: once a new column is created, remove the old age27

Value

dataframe

Details

Expects `ager27` in its documented domain (codes 1-27, where 27 is "age not stated" and maps to `NA`). A non-`NA` value outside 1-27 triggers a warning, since it would otherwise collapse silently into the 85+ bin or produce a negative age.

Examples

df <- data.frame(ager27 = c(1, 10, 23, 27))
convert_ager27(df)
#>   age
#> 1   0
#> 2  20
#> 3  85
#> 4  NA