Re: [R] testing parallel slopes assumption for Ordinal Logistic Regression

See the post by Frank Harrell at: http://groups.google.com/group/medstats/browse_thread/thread/cbff7871179e9508?pli=1 or google regrouping to satisfy proportional odds On Tue, May 1, 2012 at 2:14 AM, 80past2 wrote: > Hi everyone, I'm a bit new here (and new to R), and I was trying to do an > O

[R] testing parallel slopes assumption for Ordinal Logistic Regression

Hi everyone, I'm a bit new here (and new to R), and I was trying to do an OLR, and testing the parallel slope assumption seems be very important. I browsed through past postings, and didn't find much to help me in this area. I was wondering if anyone knew how I could go about doing this. Thank you.