I thought it would have worked with a single group. Maybe Nick knows of
the top of his head.
doug
On 6/20/13 12:36 PM, Manish Dalwani wrote:
Hi Doug and Freesurfers,
I realized that I hadn't updated my group levels to one group.
However, when I do that..the qdec complains about group.level having
at minimum two levels. How can I run (using QDEC) single group
regression?
Thanks,
Manish
------------------------------------------------------------------------
*From:* Manish Dalwani <manishdalw...@yahoo.com>
*To:* Douglas Greve <gr...@nmr.mgh.harvard.edu>;
"freesurfer@nmr.mgh.harvard.edu" <freesurfer@nmr.mgh.harvard.edu>
*Sent:* Thursday, June 20, 2013 1:26 PM
*Subject:* Re: [Freesurfer] Help with QDEC error
Hi Doug,
I was out of town for a conference. Please see my attachments. I have
the log file and screenshots of ill-matrix conditioning.
Thanks for your help!
Manish
------------------------------------------------------------------------
*From:* Douglas Greve <gr...@nmr.mgh.harvard.edu>
*To:* freesurfer@nmr.mgh.harvard.edu
*Sent:* Saturday, June 15, 2013 11:09 AM
*Subject:* Re: [Freesurfer] Help with QDEC error
Can you send the mri_glmfit.log file from
/Applications/freesurfer/subjects/qdec/Untitled ?
doug
On 6/14/13 4:57 PM, Manish Dalwani wrote:
Hello Freesurfers,
I am trying to run regression analyses within patients and one
variable of interest which adjusting for the nuisance variables age,
IQ, thickness. When i select the group and the CD (variable of
interest) and run analyses (DODS), I get the following error:
Qdec 1.4 (Qdec1.4)
Type: Error
Time: Fri Jun 14 14:49:37 2013
Description: Error in Analyze: command failed: mri_glmfit --y
/Applications/freesurfer/subjects/qdec/Untitled/y.mgh --fsgd
/Applications/freesurfer/subjects/qdec/Untitled/qdec.fsgd dods
--glmdir /Applications/freesurfer/subjects/qdec/Untitled --surf
fsaverage lh --C
/Applications/freesurfer/subjects/qdec/Untitled/contrasts/lh-Avg-Intercept-thickness.mat
--C
/Applications/freesurfer/subjects/qdec/Untitled/contrasts/lh-Avg-thickness-CD-Cor.mat
--C
/Applications/freesurfer/subjects/qdec/Untitled/contrasts/lh-Diff-CONTROLS-PATIENTS-Intercept-thickness.mat
--C
/Applications/freesurfer/subjects/qdec/Untitled/contrasts/lh-Diff-CONTROLS-PATIENTS-Cor-thickness-CD.mat
Please advice!
Regards,
Manish Dalwani
Instructor
Dept. of Psychiatry
University of Colorado
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