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October 03, 2018 11:49AM
Hello,

You might look at some of the educational resources. There are video recordings of recent bootcamps held at NIH.

The short answers are:
1. The p-value uncorrected isn't enough to get published (and for good reason). There are a few AFNI publications about responsible use of statistics that are relevant (1, 2).

2. Your options are to use FDR (q-values) or Cluster Correction. If you do cluster correction, you don't "care" about q-values.

3. To lower your q-values you need to activate more voxels. If you tell us more about your design we can hypothesize some reasons that it's high... But often people use one of the cluster correction approaches. You can read about the ways of doing so in AFNI in this paper. And also by looking at the help of 3dttest++.



Edited 1 time(s). Last edit at 10/03/2018 11:49AM by Peter Molfese.
Subject Author Posted

Question about 3ddtest+ and the q value of group results

ranjit October 02, 2018 04:24PM

Re: Question about 3ddtest+ and the q value of group results

Peter Molfese October 03, 2018 11:49AM

Re: Question about 3ddtest+ and the q value of group results

m.houston81 October 18, 2018 09:31AM

Re: Question about 3ddtest+ and the q value of group results

Peter Molfese October 18, 2018 11:01AM



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