Hi Frank and Dennis I am in a similar situation but I would prefer to use a proportional odds model. 2 questions.
1. Has rank ancova been implemented in R now, despite its short comings? 2. Where has it been shown to yield unreliable analyses? I would like this evidence (which I believe but I would like to convince others!). Thanks, Dan ________________________________ AstraZeneca UK Limited is a company incorporated in Engl...{{dropped:16}} ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.