Yes. I want to find brain areas of significant thickness difference among four groups using the atlas of aparc. Without regressing covariables, the contrast following runs correctly. 1 -1 0 0 1 0 -1 0 1 0 0 -1 How to do that with regressing covariables of age and education?
2017-07-13 6:28 GMT+08:00 Douglas N Greve greve@nmr.mgh.harvard.edu:
That will compute the main effect of diagnosis. Is that what you want?
On 07/12/2017 10:29 AM, haidong wang wrote:
Hello FS expert, I have four groups and two covariables. The groups are MCI_P,MCI_S,MCI_R,NC and the covariables are age and education. I want to test the thickness differences of the groups regressing out age and education.My group.effect.mtx is as following with the feedback of error. 1 -1 0 0 0 0 0 0 0 0 0 0 1 0 -1 0 0 0 0 0 0 0 0 0 1 0 0 -1 0 0 0 0 0 0 0 0 Thanks! I am looking forward for your prompt reply. Yours, Haidong
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