AFNI Message Board

Dear AFNI users-

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.

Sincerely, AFNI HQ

History of AFNI updates  

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February 07, 2023 01:56PM
Hi Clement,

Note that the default for 3dttest++ is -center DIFF, though I guess you should specify that anyway.

In the case of -center DIFF, each group will have any covariate means removed separately. So here the age covariates should be orthogonal to the grouping terms. At least that would apply to 3dttest++...

Does that seem reasonable?

- rick
Subject Author Posted

3dttest++ and covariate

Doughboys February 07, 2023 11:07AM

Re: 3dttest++ and covariate

rick reynolds February 07, 2023 01:56PM

Re: 3dttest++ and covariate

Doughboys February 08, 2023 04:34AM