You should setup contrasts to test the group mean for each group separately in addition to your contrast of interest. I'm actually not sure whether QDEC will do this for you or not. Then

cd glmdir/group1contrast
mri_segstats --annot fsaverage lh ../contrast-of-interest/cache.th13.abs.sig.ocn.annot --i gamma.mgh --sum yourcluster.summary.dat.

The "Mean" column will be the mean thickness

doug

On 8/5/13 6:19 PM, Worker, Amanda wrote:

Hello,

I just have a quick question about how to find the group mean of a significant cluster found in thickness analysis in QDEC. I have run comparison of a number of clinical groups with healthy controls and found several clusters of significant thinning. In the stats table generated by QDEC I can see individual subjects mean thickness but I'm not sure how to get the group mean? If you could help with this it would be much appreciated.

Thank you in advance.

Amanda
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