Hi
I run the following repeated measure anova in sas (I have 2 treatment groups with 4 repeated measures):
PROC GLM DATA=analysisdata; MODEL PRE FU1 FU2 FU3 = TREAT/ NOUNI; REPEATED TIME 3 CONTRAST (1) / SUMMARY; RUN;
The treatment*time interaction was significant. Now I would like to test within each treatment group, if there was a significant change over time and if the change between baseline (PRE) and followup1 (FU1) , the change between baseline (PRE) and followup2 (FU2) and the change between baseline (PRE) and followup3 (FU3) were signifiant. How to do these tests in SAS?
Concerning the multiple testing: What kind of adjustment do I have to do? Do I only have to adjust within each treatment group for the fact that I do 3 test (PRE versus FU1,PRE versus FU2 and PRE versus FU3) or does the adjustment have to be done over the groups (i.e. it would be 6 tests PRE versus FU1,PRE versus FU2 and PRE versus FU3 per group).
Thanks for your help.
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