date_to_age_month: Convert dates to one-month age groups
In johnrbryant/demprep: Prepare Demographic Data

Description Usage Arguments Details Value See Also Examples

Use dates of events and dates of birth to create one-month age groups.

1	date_to_age_month(date, dob)

`date`	Dates of events. A vector of class `Date`, or a vector that can be coerced to class `Date` using function `as.Date`.
`dob`	Dates of birth. A vector of class `Date`, or a vector that can be coerced to class `Date` using function `as.Date`.

date and dob must have the same length, unless one of them has length 1, in which case the length-1 argument is recycled.

an integer vector with the same length as date or dob, whichever is longer.

The output from date_to_age_month is typically processed further using function format_age_month.

Other functions for creating age groups from dates are date_to_age_year and date_to_age_quarter.

Other functions for creating one-month intervals from dates are date_to_period_month, date_to_cohort_month, and date_to_triangle_month.

date_to_age_month(date = c("2024-03-27",
                           "2022-11-09"),
                  dob = c("2021-03-21",
                          "2020-07-13"))

## replicate date of birth
date_to_age_month(date = c("2024-03-27",
                           "2022-11-09"),
                  dob = "2020-07-13")