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| From | "Sun, Wensheng" <wsun@bcm.edu> |
| To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
| Subject | st: xtmixed |
| Date | Thu, 3 Jan 2013 17:01:53 -0600 |
Dear statalist, Please help. xtmixed depvar time(indepvar1) i.treatment(indepvar2) timextreatment(inter= action), ||id:time, covariance(unstructured) residuals(independent) mle var= iance I want indepvar1 (time) to be random in coefficient and intercept, eg. Each id has its own slope and overall, different treatment has different slope at each time point. However, when I do margins treatment, at(time=3D(0 6 12 24)) then marginsplot, I got two straight parallel lines. How should I fix that? Thank you very much! Carol * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/