External Email - Use Caution Hi Levi,
Here are examples of FreeSurfer Group Descriptor (FSGD) files and contrasts for testing various hypotheses https://secure-web.cisco.com/1VPM48Rx8n-O3pwPy_s2hzAZX2WUWqjFwuTdIGDmxPsyOhDswK-1YgYN4BVCDfqODZwxD2r6VS0aanhyDE2HgETFvzBc0RNbUJSVdjf_ft7sxdgQAsSsfPizaJUCtY1Yud59Z7Hm2rn7-H_QiMgi-SpyZKZriX7cJfAzcLmBfNOxZsIOEEnaXjxDUooiub2Xp7tKr3jqfsdeVrWkQixhGLed2uitNYpilHDzWPoE9PKIrtTkHtkjK0lROJ4-5-nSsPwIXZgwAhgf3DeDBknRm0w/https%3A%2F%2Fsurfer.nmr.mgh.harvard.edu%2Ffswiki%2FFsgdExamples Best, Yujing From: freesurfer-boun...@nmr.mgh.harvard.edu <freesurfer-boun...@nmr.mgh.harvard.edu> On Behalf Of Gavette, Levi William Sent: Wednesday, July 12, 2023 11:21 AM To: freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] Matrix setup to examine group effect between three groups, one covariate (age) as nuisance variable External Email - Use Caution Hello FreeSurfer community, I am looking to perform a GLM between three groups with the single covariate of age as the nuisance variable. I am wondering how to set up my matrix design so that the output will be the group difference with age removed? Any help is really appreciated. Thanks, - Levi
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