requirePriorDrugWashout {DrugUtilisation}

Restrict cohort to only cohort records with a given amount of time since the last cohort record ended

Description

Filter the cohort table keeping only the cohort records for which the required amount of time has passed since the last cohort entry ended for that individual.

Usage

requirePriorDrugWashout(
  cohort,
  days,
  cohortId = NULL,
  name = omopgenerics::tableName(cohort)
)

Arguments

cohort

A cohort table in a cdm reference.

days

The number of days required to have passed since the last cohort record finished. Any records with fewer days than this will be dropped. Note that setting days to Inf will lead to the same result as that from using the requireIsFirstDrugEntry function (with only an individual´s first cohort record kept).

cohortId

IDs of the cohorts to modify. The default is NULL meaning all cohorts will be used; otherwise, only the specified cohorts will be modified, and the rest will remain unchanged.

name

Name of the table with the filtered cohort records. The default name is the original cohort name, where the original table will be overwritten.

Value

The cohort table having applied the washout requirement.

Examples

library(DrugUtilisation)
library(dplyr)

cdm <- mockDrugUtilisation()

cdm$cohort1 <- cdm$cohort1 |>
  requirePriorDrugWashout(days = 90)

attrition(cdm$cohort1) |> glimpse()