matchTab {epicalc} | R Documentation |
Tabulation of a matched case control study
matchTab (case, exposed, strata)
case |
Outcome variables where 0 = control and 1 = case |
exposed |
Exposure variable where 0 = non-exposed and 1 = exposed |
strata |
Number identification for each matched set |
Tabulation for an unmatched case control study is based on individual records classified by outcome and exposure variables.
Matched tabulation is tallying based on each matched set. The simplest form is McNemar's table where only one case is matched with one control. 'matchTab' can handle 1:m matching where m can vary from 1 to m. A MLE method is then used to compute the conditional odds ratio.
Virasakdi Chongsuvivatwong <cvirasak@medicine.psu.ac.th>
'table', 'cc' and 'clogit'
attach(infert) ia <- induced > 0 matchTab(case, ia, stratum) detach(infert) # See also library(survival) clogit(case ~ ia + strata(stratum), data=infert)