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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March 07, 2023 10:12AM
Hi Gang and Taylor,

Thank you so much for your reply and suggestions.

I have rerun the code with a small change. Instead of this
-bsVars 'Group*Sex+Group*Age' \
I have used this option under the 3dMVM command
-bsVars 'Group*Sex+Age' \ ---- this is now giving me the same result for F-test and t-test. In terms of syntax, what is the difference between these 2 options in the 3dMVM command?

Only issue with the outcome is that- the x,y,z positions of the clusters are different in the cluster report for the tests, though visually the image shows exactly the same clusters. I am attaching side-by-side photos for F-test and t-test. Also the 3dClust outcome is attached (both are bi-sided, F value for Pthreshold= -4.13 to 4.13 and t score for Pthreshold= -2.0322 to 2.0322. That satisfies F=t^2).
Attachments:
open | download - 3mvm_screenshot.png (176 KB)
open | download - 3dclust info.png (151.8 KB)
Subject Author Posted

3dMVM F test and t test output Attachments

Adury March 05, 2023 04:12PM

Re: 3dMVM F test and t test output

gang March 06, 2023 11:58AM

Re: 3dMVM F test and t test output

ptaylor March 06, 2023 01:17PM

Re: 3dMVM F test and t test output Attachments

Adury March 07, 2023 10:12AM

Re: 3dMVM F test and t test output Attachments

Adury March 07, 2023 10:14AM

Re: 3dMVM F test and t test output Attachments

Adury March 07, 2023 10:18AM

Re: 3dMVM F test and t test output

ptaylor March 07, 2023 03:44PM

Re: 3dMVM F test and t test output Attachments

Adury March 08, 2023 09:19AM

Re: 3dMVM F test and t test output

Adury March 08, 2023 01:30PM

Re: 3dMVM F test and t test output

ptaylor March 08, 2023 04:24PM

Re: 3dMVM F test and t test output

Adury March 08, 2023 09:51PM

Re: 3dMVM F test and t test output

ptaylor March 09, 2023 01:14PM

Re: 3dMVM F test and t test output Attachments

Adury March 21, 2023 10:27PM

Re: 3dMVM F test and t test output

ptaylor March 22, 2023 06:47PM

Re: 3dMVM F test and t test output

ptaylor March 23, 2023 06:18AM

Re: 3dMVM F test and t test output

Adury March 24, 2023 11:11AM