Matched case-control study {epicalc} | R Documentation |
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.
data(VC1to1) data(VC1to6)
A data frame with the following 5 variables.
matset
case
smoking
rubber
alcohol
Chongsuvivatwong, V. 1990 A case-control study of esophageal cancer in Southern Thailand. J Gastro Hep 5:391–394.
'infert' in the datasets package.
data(VC1to6) use(VC1to6) des() matchTab(case, alcohol, matset)