We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:
https://discuss.afni.nimh.nih.gov
Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.
The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.
> Is it possible to include a categorical covariate? Or Could I just dummy code 1 and
> 2 (or 0 and 1) for group membership and not center?
Code the two groups as 1 and -1 respectively, then the first two sub-bricks would be the average effect between the two groups, while the next sub-bricks would be group difference between the two groups.
Gang
Edited 1 time(s). Last edit at 04/18/2016 04:01PM by Gang.