Massieh, A quick answer is to have a look at these pages:
http://surfer.nmr.mgh.harvard.edu/fswiki/FsgdExamples and http://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/GroupAnalysis The examples don't exactly match what you want, but you might be able to cull together what you need. Nick On Tue, 2009-08-04 at 08:41 -0400, mmoay...@uhnres.utoronto.ca wrote: > Hello FreeSurfer Experts, > > I am trying to run a contrast comparing 3 different classes, and using one > covariate as follows (truncated for simplicity's sake!): > > GroupDescriptorFile 1 > Title CTA TMD Patients Low vs Patient High vs Controls > Class Control plus blue > Class Patient_Low circle green > Class Patient_High cross red > Variables Age > Input c3 Control 25 > Input c4 Control 27 > .. > .. > .. > Input p1 Patient_Low 22 > Input p2 Patient_Low 20 > .. > .. > .. > Input p12 Patient_High 50 > Input p13 Patient_High 59 > Input p14 Patient_High 18 > > I was wondering how I can 1) Compare cortical thickness between the 3 groups, > using the variable as a covariate of no interest and, subsequently, compare > between the age slopes of the 3 classes. > > Any (and all) help is greatly appreciated. > > Regards, > > Massieh Moayedi > PhD Student > Institute of Medical Science > University of Toronto > > Department of Brain, Imaging and Behaviour- Systems Neurosciene > Toronto Western Research Institute > University Health Network > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
