Matched case-control study: Datasets on a matched case-control study of esophageal cancer
Description
Two different datasets for the same matched case-control study. VC1to6 has 1 case : varying number of controls (from 1 to 6) whereas VC1to1 has the number of control reduced to 1 for each case.
Usage
data(VC1to1)
data(VC1to6)
Arguments
Format
A data frame with the following 5 variables.
matset
a numeric vector indicating matched set number from 1 to 26
case
a numeric vector: 1=case, 0=control
smoking
a numeric vector: 1=smoker, 0=non-smoker
rubber
a numeric vector: 1=exposed, 0=never exposed to rubber industry