requireFutureObservation() filters cohort records, keeping only records
where individuals satisfy the specified future observation criteria.
Usage
requireFutureObservation(
cohort,
minFutureObservation,
cohortId = NULL,
indexDate = "cohort_start_date",
atFirst = FALSE,
name = tableName(cohort)
)Arguments
- cohort
A cohort table in a cdm reference.
- minFutureObservation
A minimum number of continuous future observation days in the database.
- 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.
- indexDate
Variable in cohort that contains the date to compute the demographics characteristics on which to restrict on.
- atFirst
If FALSE the requirement will be applied to all records, if TRUE, it will only be required for the first entry of each subject.
- name
Name of the new cohort table created in the cdm object.
Value
The cohort table with only records for individuals satisfying the future observation requirement
Examples
# \donttest{
library(CohortConstructor)
if(isTRUE(omock::isMockDatasetDownloaded("GiBleed"))){
cdm <- mockCohortConstructor()
cdm$cohort1 |>
requireFutureObservation(indexDate = "cohort_start_date",
minFutureObservation = 30)
}
# }