Linear Mixed Model in SPSS Guidance

Posted by msherman on Apr 23, 2019; 1:00pm
URL: http://spssx-discussion.165.s1.nabble.com/Linear-Mixed-Model-in-SPSS-Guidance-tp5737698.html

Dear List:  I am working on  pretest/post-test study with two between group factors, Treatment (Therapy A vs. Therapy B) and Age (younger vs. Older) on various outcome variables (all continuous). I originally considered doing a  repeated measures analysis but after reading up on the pros and cons of such an analysis I decided that a linear mixed model would be more appropriate given the correlation between the pre-test scores and the post-test scores. To further my understanding I reviewed the text by Verbeke and Molenberghs (Linear Mixed Models for Longitudinal Data). Getting through the text proved to be a challenge (many many equations beyond my pay grade). So I starting looking for some dummy downed explanations on how to set up my statistical model. So far that have not generated any comparable examples of my design  (2 x 2 x (2)). I am hoping there are some folks on the listserve that might be able to point me in some directions that will prove to be beneficial. I have googled but I have not found any helpful tutorials. Per chance if anyone has a good tutorial for my design I would appreciate hearing from you.  Thanks,  martin sherman

Martin F. Sherman, Ph.D.

Professor of Psychology

Loyola University Maryland

4501 North Charles Street

222 B Beatty Hall

Baltimore, MD 21210

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