That is strange. Can you change the FDR to something ridiculous like .5 and see if that changes things?
Xiaojing Long wrote: > Hi, all, > > I have some questions about performing the FDR correction in Qdec. > > I ran recon-all on all my subjects, then ran the surface group > analysis following the Qdec tutorial. There are 3 factors in the > qdec.table.dat file: age, gender and diagnosis. In the Design tab of > Qdec, I selected the discrete factor 'diagnosis' for analysis. When > the analysis was done, there is a description "Does the average > thickness differ between Diseased and Normal?" in the Display tab. I > think this should be the uncorrected map. Then I tried to run the FDR > correction for multiple comparisons. I set the rate to be 0.05 and > 0.01 respectively. However, I found no difference between the results > using different rates. In the Terminal, the information are also the same: > > "MRISfdr2vwth(): np = 163842, nv = 163842 > Found 107008 of 163842 vertices above FDR threshold (of 1.48619)" > > I wonder whether I did the analysis correctly. Are such results > possible or reasonable? > > Thank you in advance. > > > Best, > > Xiaojing > > > > > ------------------------------------------------------------------------ > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
