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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August 17, 2021 11:50AM
> No individual fixed effect of diagnosis is included in the specified LMM-1 model but it yields z and p-values for the fixed effects?
> Two-way interactions are not specified in the model?

The R notation for the model formulation

Diagnosis *Age* Sex

is equivalent to

Diagnosis + Age + Sex + Diagnosis:Age + Diagnosis:Sex + Age:Sex + Diagnosis:Age:Sex

In other words, all the main effects, two-way and three-way interactions among the three variables (Diagnosis, Age, and Sex) are included in the model.

Gang
Subject Author Posted

How to build a correct LME model through the 3dLMEr program

keke August 14, 2021 05:36AM

Re: How to build a correct LME model through the 3dLMEr program

gang August 17, 2021 11:50AM