Re: [Freesurfer] Qdec stats question

2016-04-22 Thread Douglas N Greve
In general, qdec should be used to "play" with your data in an interactive way. For many designs, you may need to run the command-line stream. This is probably one of them. If you have continuous nuisance variables, then you should run the analysis using DODS and test for an interaction of the

Re: [Freesurfer] Qdec stats question

2016-04-22 Thread Douglas N Greve
On 04/21/2016 10:15 AM, Ajay Kurani wrote: > Hi Freesurfer Experts, > > I have used freesurfer smoothed images > (lh.thickness.fsaverage.fwhm15.gii) to perform a cortical thickness > analysis. I used qdec with a surface-based morphometric analysis to > compare two groups. As my discrete fixed

Re: [Freesurfer] Qdec stats question

2016-04-22 Thread Ajay Kurani
Hello Freesurfer Experts, I wanted to see if I am setting up qdec correctly. I am using cortical thickness as my measure. When using the Qdec gui in Freesurfer 6.0 i supplied the following files: qdec.table.dat which contains the following: Subject Group Gender Age Site Yrs_Education For cat

[Freesurfer] Qdec stats question

2016-04-21 Thread Ajay Kurani
Hi Freesurfer Experts, I have used freesurfer smoothed images (lh.thickness.fsaverage.fwhm15.gii) to perform a cortical thickness analysis. I used qdec with a surface-based morphometric analysis to compare two groups. As my discrete fixed factor I used group membership. As Nuisance factors I used