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st: -xtmixed- Statistics question about testing differences between groups at specific times
From
"Sun, Wensheng" <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: -xtmixed- Statistics question about testing differences between groups at specific times
Date
Tue, 8 Jan 2013 17:16:00 -0600
Hi,
I am using –xtmixed- on a longitudinal study with planned measurements at 0, 6, 12 and 24 months, but very few follow-up measurements at the planned time. I have fitted the model and need to evaluate changes from baseline and also differences between two treatment groups at exactly 6, 12 and 24 months. The –xtmixed- followed by –margins- gives margins and standard error at each time. How do I compare them? I am using Stata 12 for Windows. Thanks.
Carol
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