topic Re: Ordinal logistic regression for longitudinal data in Statistical Procedures

Ordinal logistic regression for longitudinal data

Joey — Wed, 15 Apr 2009 17:51:28 GMT

Hi, I have a longitudinal data set on which I would like to run a ordinal logistic regression with a few different types of covariance matrices (Like to try out unstructured, ar1 etc). Which would be the best command/model to do so?

Thanks

Re: Ordinal logistic regression for longitudinal data

statsplank — Thu, 16 Apr 2009 15:17:25 GMT

Hi,

Are you familiar with PROC GENMOD?
http://support.sas.com/documentation/cdl/en/statug/59654/HTML/default/statug_genmod_sect009.htm

This procedure allows fitting ordinal logistic regression models and through REPEATED statement you can specify the covariance structure:
http://support.sas.com/documentation/cdl/en/statug/59654/HTML/default/statug_genmod_sect025.htm

Re: Ordinal logistic regression for longitudinal data

plf515 — Tue, 21 Apr 2009 19:22:02 GMT

I think you want PROC GLIMMIX, which is part of 9.2, but can be downloaded from the SAS web site for earlier versions