Create matching criteria

Criteria to use to select individual matches for cases.

createMatchingCriteria(
  controlsPerCase = 1,
  matchOnAge = TRUE,
  ageCaliper = 2,
  matchOnGender = TRUE,
  matchOnProvider = FALSE,
  matchOnCareSite = FALSE,
  matchOnVisitDate = FALSE,
  visitDateCaliper = 30,
  matchOnTimeInCohort = FALSE,
  daysInCohortCaliper = 30,
  removedUnmatchedCases = TRUE,
  seed = 1
)

Arguments

controlsPerCase

Maximum number of controls to select per case.

matchOnAge

Match on age?

ageCaliper

Maximum difference (in years) in age when matching on age.

matchOnGender

Match on gender?

matchOnProvider

Match on provider (as specified in the person table)?

matchOnCareSite

Match on care site (as specified in the person table)?

matchOnVisitDate

Should the index date of the control be changed to the nearest visit date?

visitDateCaliper

Maximum difference (in days) between the index date and the visit date when matching on visit date.

matchOnTimeInCohort

Match on time in nesting cohort? When not using nesting, this is interpreted as time observed prior to index.

daysInCohortCaliper

Maximum difference (in days) in time in cohort.

removedUnmatchedCases

Should cases with no matched controls be removed?

seed

The number generator seed. A null value sets seed via Sys.time.

Value

A settings object to be used in the selectControls function.