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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June 16, 2006 05:39PM
> I am wondering if anyone has an opinion about the
> appropriateness of using z scores in a group analysis (i.e., using z
> scores as the DV) rather than something like percent signal change
> or the parameter estimate itself.


Sometimes you have to convert the values (for example correlation coefficients) to z-score berfore you run group analysis. When percent signal change is available from individual subjects, I fail to see how the z-score conversion is done. From t values or percent signal change? Maybe a concrete example is more helpful.

Gang
Subject Author Posted

z scores entered as DV for group analysis

Anthony Dick June 16, 2006 04:15PM

Re: z scores entered as DV for group analysis

Gang Chen June 16, 2006 05:39PM

Re: z scores entered as DV for group analysis

Anthony Dick June 16, 2006 06:00PM

Re: z scores entered as DV for group analysis

Gang Chen June 19, 2006 10:56AM

Re: z scores entered as DV for group analysis

Anthony Dick June 19, 2006 12:20PM

Re: z scores entered as DV for group analysis

Gang Chen June 19, 2006 02:59PM

Re: z scores entered as DV for group analysis

Anthony Dick June 19, 2006 05:05PM

Re: z scores entered as DV for group analysis

Gang Chen June 19, 2006 05:39PM

Re: z scores entered as DV for group analysis

Anthony Dick June 20, 2006 11:27AM