John, Don't conclude that one category is the most probable when its probability of being equaled or exceeded is a maximum. The first category would always be the winner if that were the case.
When you say y=best remember that you are dealing with a probability model. Nothing is forcing you to classify an observation, and unless the category's probability is high, this may be dangerous. You might do well to consider a more smooth approach such as using the generalized roc area (C-index) or its related rank correlation measure Dxy. Also there are odds ratios. Frank ----- Frank Harrell Department of Biostatistics, Vanderbilt University -- View this message in context: http://r.789695.n4.nabble.com/Interpreting-the-example-given-by-Frank-Harrell-in-the-predict-lrm-Design-help-tp2883311p2891623.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
