addPriorObservation {PatientProfiles}

Compute the number of days of prior observation in the current observation period at a certain date

Description

Compute the number of days of prior observation in the current observation period at a certain date

Usage

addPriorObservation(
  x,
  indexDate = "cohort_start_date",
  priorObservationName = "prior_observation",
  priorObservationType = "days",
  name = NULL
)

Arguments

x

Table with individuals in the cdm.

indexDate

Variable in x that contains the date to compute the prior observation.

priorObservationName

name of the new column to be added.

priorObservationType

Whether to return a "date" or the number of "days".

name

Name of the new table, if NULL a temporary table is returned.

Value

cohort table with added column containing prior observation of the individuals.

Examples

cdm <- mockPatientProfiles()

cdm$cohort1 %>%
  addPriorObservation()
mockDisconnect(cdm = cdm)