Thank you for previous help.

Now I want to compare the cortical thickness of the two groups. Mr Pacheco tells me to use the group analysis to compare. When I read the manual of the group analysis (https://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/GroupAnalysis), I meet some problem. When writing the FSGD file, I don't how to input another group thickness (eg, control group) in to the FSGD. If not use method, how to compare the cortical thickness between the two group?