Dear FSL Experts,
I'm trying to perform a longitudinal analysis in TBSS at two time-points (T1 T2) in 3 patient groups. At the moment I've performed a paired t-test GLM design to compare longitudinal change within each group. I'm wondering how to then compare mean inter-individual change across the 3 patient groups and what the GLM would look like.
At the moment I've concatenated T1/T2 within each group and run separately using the following:
T1/T2 subj1 subj2 subj...
1 1 0 0
1 0 1 0
1 0 0 1
-1 1 0 0
-1 0 1 0
-1 0 0 1
Contrast [1 0 0 0]
Thanks for your advice,
Cong
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