sampleCohorts() samples an existing cohort table for a given number of
people. All records of these individuals are preserved.
Usage
sampleCohorts(cohort, n, cohortId = NULL, name = tableName(cohort))Arguments
- cohort
A cohort table in a cdm reference.
- n
Number of people to be sampled for each included cohort.
- 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()
#> ℹ Reading GiBleed tables.
cdm$cohort2 |> sampleCohorts(cohortId = 1, n = 10)
#> # A tibble: 116 × 4
#> cohort_definition_id subject_id cohort_start_date cohort_end_date
#> * <int> <int> <date> <date>
#> 1 1 69 1990-03-22 1990-07-07
#> 2 1 34 1986-08-03 2000-03-08
#> 3 1 70 1992-05-29 1995-01-23
#> 4 1 48 1988-08-03 1989-02-20
#> 5 1 46 1969-11-06 1985-06-19
#> 6 1 46 1986-07-02 1986-10-08
#> 7 1 27 2009-09-14 2013-07-24
#> 8 1 60 2018-05-08 2018-05-14
#> 9 1 60 2018-05-15 2018-08-24
#> 10 1 60 2018-09-07 2018-10-24
#> # ℹ 106 more rows
# }