derive_var_trtdurd: Derive Total Treatment Duration (Days)

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Derive Total Treatment Duration (Days)

Description

Derives total treatment duration (days) (TRTDURD).

Note: This is a wrapper function for the more generic derive_vars_duration().

Usage

derive_var_trtdurd(dataset, start_date = TRTSDT, end_date = TRTEDT)

Arguments

dataset	Input dataset The variables specified by the start_date and end_date arguments are expected to be in the dataset. Default value none
start_date	The start date A date or date-time object is expected. Refer to derive_vars_dt() to impute and derive a date from a date character vector to a date object. Default value TRTSDT
end_date	The end date A date or date-time object is expected. Refer to derive_vars_dt() to impute and derive a date from a date character vector to a date object. Default value TRTEDT

Details

The total treatment duration is derived as the number of days from start to end date plus one.

Value

The input dataset with TRTDURD added

See Also

derive_vars_duration()

Date/Time Derivation Functions that returns variable appended to dataset: derive_vars_dt(), derive_vars_dtm(), derive_vars_dtm_to_dt(), derive_vars_dtm_to_tm(), derive_vars_duration(), derive_vars_dy()

Examples

library(tibble)
library(lubridate)

data <- tribble(
  ~TRTSDT, ~TRTEDT,
  ymd("2020-01-01"), ymd("2020-02-24")
)

derive_var_trtdurd(data)

admiral documentation built on June 26, 2025, 1:08 a.m.