make_analysis_set {nncc}

Make analysis set

Description

Set a maximum number of controls that are allowed to be matched to a case; ensure that matched case-control pairs have a distance closer than the predefined threshold; merge strata sharing same controls.

Usage

make_analysis_set(
  var,
  stratified_data,
  data,
  maxdist = 0,
  maxcontrols = 20,
  silent = FALSE
)

Arguments

var

Character of current exposure variable in make_analysis_sets

stratified_data

Stratified dataset, see make_knn_strata

data

Original case control data

maxdist

Reject any controls more than maxdist from their case

maxcontrols

Maximum number of controls to keep per strata

silent

Suppress exposure info useful for *apply/loop implementations

Details

For more information, please refer to the vignette using browseVignettes("nncc").

Value

A list of data frames with the length of number of exposures.