age_years: Accurate and efficient age calculation
Description
Correct calculation of ages in years using lubridate periods.
Leap year calculations work as well.
Usage
age_years(start, end = if (is_date(start)) Sys.Date() else Sys.time())age_months(start, end = if (is_date(start)) Sys.Date() else Sys.time())
Value
Integer vector of age in years or months.
Arguments
- start
Start date/datetime, typically date of birth.
- end
End date/datetime. Default is current date/datetime.