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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May 23, 2014 04:19PM
Hello,

We have a question about a repeated measures analysis were are currently running.

All participants conducted scans on 3 separate visits each. Thus, there are 3 measurements per subject.

However, the time in between scan visits varied from subject to subject. For example, the time between visit1 and visit2 is 3 days for subject1, the time between visit1 and visit3 for subject8 is 11 days. How can we account for this subject specific variability for time? A traditional 3dANOVA would not account for this variability, correct? Which analysis tool should we use? 3dLME? If it is 3dLME, what are the options for -corStr besides AR or ARMA. Is there a choice for Unstructured?

Any input or suggestions is appreciated.


Michael
Subject Author Posted

Variation of time for Repeated Measures

mrif May 23, 2014 04:19PM

Re: Variation of time for Repeated Measures

gang May 23, 2014 04:54PM

Re: Variation of time for Repeated Measures

mrif May 23, 2014 05:15PM

Re: Variation of time for Repeated Measures

gang May 23, 2014 05:58PM

Re: Variation of time for Repeated Measures

mrif May 23, 2014 07:28PM

Re: Variation of time for Repeated Measures

gang May 24, 2014 02:57PM

Re: Variation of time for Repeated Measures

mrif June 08, 2014 04:37PM

Re: Variation of time for Repeated Measures

mrif June 16, 2014 04:39PM

Re: Variation of time for Repeated Measures

gang June 17, 2014 10:45AM

Re: Variation of time for Repeated Measures

mrif June 17, 2014 11:22AM

Re: Variation of time for Repeated Measures

mrif June 18, 2014 09:52AM

Re: Variation of time for Repeated Measures

gang June 18, 2014 11:16AM

Re: Variation of time for Repeated Measures

mrif June 18, 2014 12:43PM

Re: Variation of time for Repeated Measures

prerona December 16, 2018 05:39PM

Re: Variation of time for Repeated Measures

gang December 17, 2018 03:09PM

Re: Variation of time for Repeated Measures

prerona December 17, 2018 07:36PM

Re: Variation of time for Repeated Measures

gang December 18, 2018 03:13PM

Re: Variation of time for Repeated Measures

prerona December 18, 2018 03:26PM