Hello, I have a loop with 1000 repetitions which includes OR computation of an exposure factor and outcome. I compute OR like this:
t<-table(exposure,outcome) oddsratio(t)$measure["estimate"] This gives me the estimates for exposure=0 and exposure=1 but exposure=0 is the reference group and i need only the estimate for exposure=1. I specified a matrix OR with 3 columns (for OR estimate and lower and upper confidence limits) and 1000 rows OR[k,]<-oddsratio(t)$measure["estimate"]? I tried: "exposure==1" or "measure["estimate"]" and it gives me missing value "NA". I appriciate any help, Sigalit. [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.