Set cohort start or cohort end
Usage
padCohortDate(
cohort,
days,
cohortDate = "cohort_start_date",
indexDate = "cohort_start_date",
collapse = TRUE,
padObservation = TRUE,
cohortId = NULL,
name = tableName(cohort)
)Arguments
- cohort
A cohort table in a cdm reference.
- days
Integer with the number of days to add or name of a column (that must be numeric) to add.
- cohortDate
'cohort_start_date' or 'cohort_end_date'.
- indexDate
Variable in cohort that contains the index date to add.
- collapse
Whether to collapse the overlapping records (TRUE) or drop the records that have an ongoing prior record.
- padObservation
Whether to pad observations if they are outside observation_period (TRUE) or drop the records if they are outside observation_period (FALSE)
- cohortId
Vector identifying which cohorts to modify (cohort_definition_id or cohort_name). If NULL, all cohorts will be used; otherwise, only the specified cohorts will be modified, and the rest will remain unchanged.
- name
Name of the new cohort table created in the cdm object.
Examples
# \donttest{
library(CohortConstructor)
cdm <- mockCohortConstructor()
cdm$cohort1 |>
padCohortDate(
cohortDate = "cohort_end_date",
indexDate = "cohort_start_date",
days = 10)
#> # Source: table<main.cohort1> [10 x 4]
#> # Database: DuckDB v1.1.2 [unknown@Linux 6.5.0-1025-azure:R 4.4.2/:memory:]
#> cohort_definition_id subject_id cohort_start_date cohort_end_date
#> <int> <int> <date> <date>
#> 1 1 6 2003-11-15 2003-11-25
#> 2 1 5 2008-11-11 2008-11-21
#> 3 1 3 1976-11-28 1976-12-08
#> 4 1 5 2007-10-19 2007-10-29
#> 5 1 4 1998-06-22 1998-07-02
#> 6 1 9 2012-01-18 2012-01-28
#> 7 1 2 1964-09-18 1964-09-28
#> 8 1 3 1977-03-12 1977-03-22
#> 9 1 3 1978-04-04 1978-04-14
#> 10 1 6 2003-10-31 2003-11-10
# }