On 03/06/2018 12:03 PM, Douglas N. Greve wrote:
On 03/06/2018 10:14 AM, Avideh Gharehgazlou wrote:
Hi,
I have a 2 questions regarding properly interpreting results from QDEC. Will you please clarify the following for me?
- What is the difference between stats table generated after
correcting for multiple comparisons (i.e. monte carlo), vs the stats table generated after clicking "find clusters and go to max"? Results from which stats table should be reported? After searching on the web, I am still unclear about what exactly "find clusters and go to max" button does... and whether these are corrected results or not?
That button just finds clusters an will move the cursor to the maximum value inside the cluster. There is no correction for multiple comparisons with the "find clusters and go to max" button.
- My understanding is that "CWP" column in stats table represents
p-values of each cluster. However, when I manually convert values in the "max" column (which I assume are freesurfer p-values reported in -log(10)), I get different p-values than what are listed in "CWP" column for each cluster. Again, my question is whether I should report "CWP" values as my p-values or convert manually myself and report those?
The max is the maximum uncorrected vertex-wise significance in the cluster and is unrelated to the clusterwise p-value (CWP).
I would really appreciate your help!
Thanks so much,
Avi
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