On 07/13/2017 10:37 AM, stdp82@virgilio.it wrote:
Dear FS group,
I don't understand how I should build the contrast for 3 groups 1 covariate. No specific example is provided within fsgd example and also other colleagues report the same problem in the mail list. Please could you provide us details on this topic? Especially, how should be the g3v1.intercept and g31v.slope?
1 -1 0 0 0 0 1 0 -1 0 0 0 for g3v1.intercept.mtx
This is the main effect of group on the intercept regressing out the effect of covariate.
and 0 0 0 1 -1 0 0 0 0 1 0 -1 for g3v1.slope.mtx
This is the main effect of group on the slope regressing out the effect of group intercept.
are corrected?
Waiting for you very wellcome suggestions
Thanks and kind regards
Stefano
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