requireObservationBeforeDrug {DrugUtilisation} | R Documentation |
Restrict cohort to only cohort records with the given amount of prior observation time in the database
Description
Filter the cohort table keeping only the cohort records for which the individual has the required observation time in the database prior to their cohort start date.
Usage
requireObservationBeforeDrug(
cohort,
days,
cohortId = NULL,
name = omopgenerics::tableName(cohort)
)
Arguments
cohort |
A cohort_table object. |
days |
Number of days of prior observation required before cohort start date. Any records with fewer days will be dropped. |
cohortId |
A cohort definition id to restrict by. If NULL, all cohorts will be included. |
name |
Name of the new cohort table, it must be a length 1 character vector. |
Value
The cohort table having applied the prior observation requirement.
Examples
library(DrugUtilisation)
library(dplyr)
cdm <- mockDrugUtilisation()
cdm$cohort1 <- cdm$cohort1 |>
requireObservationBeforeDrug(days = 365)
attrition(cdm$cohort1) |> glimpse()
[Package DrugUtilisation version 0.8.0 Index]