requireIsEntry: Restrict cohort to specific entry

In CohortConstructor: Build and Manipulate Study Cohorts Using a Common Data Model

Restrict cohort to specific entry

Description

requireIsFirstEntry() filters cohort records, keeping only the first cohort entry per person.

Usage

requireIsEntry(cohort, entryRange, cohortId = NULL, name = tableName(cohort))

Arguments

cohort	A cohort table in a cdm reference.
entryRange	Range for entries to include.
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.

Value

A cohort table in a cdm reference.

Examples

library(CohortConstructor)
if(isTRUE(omock::isMockDatasetDownloaded("GiBleed"))){
cdm <- mockCohortConstructor()
cdm$cohort1 <- requireIsEntry(cdm$cohort1, c(1, Inf))
}

CohortConstructor documentation built on Nov. 5, 2025, 6:53 p.m.