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

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gang
May 20, 2013 11:10AM
Hi Erin,

> Is it possible, using 3dLME to specify the model so that I can investigate the effect
> of patient status after accounting for any potential effect of scanner (pre- or
> post-upgrade)?

Sure, you can add the scanner as a categorical variable.

> Would I need to change my SS calculation to Type I/sequential and then enter
> scanner first in my model specification?

This is controversial issue. Some people prefer type I, but the problem is that it's sensitive to the order (or position) of each variable in the model. You can try both type I and III, and see how much they differ.

Gang
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Subject Author Posted

3dLME questions

Erin April 17, 2013 06:53PM

Re: 3dLME questions

gang April 18, 2013 10:44AM

Re: 3dLME questions

Erin April 18, 2013 11:56AM

Re: 3dLME questions

gang April 18, 2013 07:31PM

Re: 3dLME questions

Erin April 29, 2013 02:59PM

Re: 3dLME questions

Erin April 29, 2013 04:22PM

Re: 3dLME questions

gang April 29, 2013 04:30PM

Re: 3dLME questions

Erin May 18, 2013 04:27PM

Re: 3dLME questions

gang May 20, 2013 11:10AM

Re: 3dLME questions

Oya T June 19, 2013 06:19PM

Re: 3dLME questions

gang June 20, 2013 08:37AM