Define ggconsort cohorts — cohort

Following a call to cohort_start, use cohort_define to construct cohorts from the full source data which are appended to the ggconsort_cohort object.

Usage

cohort_define(.data, ...)

Arguments

.data: A ggconsort_cohort object
...: A series of named expressions which define the cohorts

Value

The modified ggconsort_cohort object which now includes additional $data items according to provided cohort definitions

Examples

# cohorts draw on `.full` (the source data) or any earlier cohort;
# dplyr::anti_join() is a convenient way to count exclusions
trial_data |>
  cohort_start("Assessed for eligibility") |>
  cohort_define(
    consented = .full |> dplyr::filter(declined != 1),
    excluded = dplyr::anti_join(.full, consented, by = "id")
  )
#> A ggconsort cohort of 1200 observations with 2 cohorts:
#>   - consented (1141)
#>   - excluded (59)