Sample a cohort table for a given number of individuals.
sampleCohorts.RdsampleCohorts() samples an existing cohort table for a given number of
people. All records of these individuals are preserved.
Usage
sampleCohorts(cohort, cohortId = NULL, n, name = tableName(cohort))Arguments
- cohort
A cohort table in a cdm reference.
- cohortId
Vector identifying which cohorts to include (cohort_definition_id or cohort_name). Cohorts not included will be removed from the cohort set.
- n
Number of people to be sampled for each included cohort.
- name
Name of the new cohort table created in the cdm object.
Examples
# \donttest{
library(CohortConstructor)
cdm <- mockCohortConstructor(nPerson = 100)
cdm$cohort2 |> sampleCohorts(cohortId = 1, n = 10)
#> # Source: table<main.cohort2> [?? x 4]
#> # Database: DuckDB v1.0.0 [unknown@Linux 6.5.0-1025-azure:R 4.4.1/:memory:]
#> cohort_definition_id subject_id cohort_start_date cohort_end_date
#> <int> <int> <date> <date>
#> 1 1 13 2014-06-24 2014-06-29
#> 2 1 13 2014-06-30 2014-08-07
#> 3 1 35 2018-01-07 2018-02-19
#> 4 1 35 2018-02-20 2018-03-22
#> 5 1 38 1990-05-01 1994-07-14
#> 6 1 45 1998-02-22 2000-05-25
#> 7 1 45 2000-05-26 2007-09-06
#> 8 1 53 2003-05-29 2006-06-20
#> 9 1 60 1974-02-12 1979-10-10
#> 10 1 70 1965-04-30 1965-05-20
#> # ℹ more rows
# }