> > Why are the first 5 variables kept in the stepwise result?? I don't know, for your data set.
However, AIC is in my limited experience less likely to reject a term than rejection based on p-value at 95% confidence. It's not the same criterion, so there's no immediate reason it should give the same result. And it often - quite correctly - doesn't. S Ellison ******************************************************************* This email and any attachments are confidential. Any use...{{dropped:8}} ______________________________________________ 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.