Dear Freesurfers,
I just have some quick questions regarding qdec:
1. How many covariates does the latest version of qdec allow you to select? I am using FS version 4.3.0 and I cannot select more than 2 continuous variables. I am just wondering if a newer version allows you to select more covariates. 2. Does qdec allow you to choose between study designs DOSS and DODS? I currently do not see this option and I think my current version of qdec defaults to the DODS option.
Thank you for your time,
Prapti
The newest version of FreeSurfer does not contain any changes to qdec I believe. Allison
Dear freesurfers,
I have a few additional questions regarding qdec.
1. Is it possible to specify in qdec so that the results of the analyses run are saved in a separate destination than the SUBJECTS_DIR?
2. I have read in the qdec tutorial that it is possible to select up to 4 variables to regress in analyses, but I can only select 1 discrete and 2 continuous variables in my version. I am running Freesurfer v4.3.0. Does this mean I have an older version of qdec that only allows selection of 2 continuous variables and I need to update to a newer version of freesurfer??
Thank you for your help,
Prapti
-----Original Message----- From: Allison Stevens [mailto:astevens@nmr.mgh.harvard.edu] Sent: Friday, 10 July 2009 4:15 AM To: Prapti Gautam Cc: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] qdec question
The newest version of FreeSurfer does not contain any changes to qdec I believe. Allison
Prapti Gautam wrote:
Dear freesurfers,
I have a few additional questions regarding qdec.
- Is it possible to specify in qdec so that the results of the analyses
run are saved in a separate destination than the SUBJECTS_DIR?
I'll leave this for Nick.
- I have read in the qdec tutorial that it is possible to select up to
4 variables to regress in analyses, but I can only select 1 discrete and 2 continuous variables in my version. I am running Freesurfer v4.3.0. Does this mean I have an older version of qdec that only allows selection of 2 continuous variables and I need to update to a newer version of freesurfer??
The 4 variables are 2 discrete and 2 continuous. This is all it does right now. If you need more, you'll have to run mri_glmfit manually.
doug
Thank you for your help,
Prapti
-----Original Message----- From: Allison Stevens [mailto:astevens@nmr.mgh.harvard.edu] Sent: Friday, 10 July 2009 4:15 AM To: Prapti Gautam Cc: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] qdec question
The newest version of FreeSurfer does not contain any changes to qdec I believe. Allison
Prapti,
To save results in another directory:
setenv QDEC_WORKING_DIR some/pathname
then run qdec.
Nick
On Thu, 2009-07-23 at 12:19 -0400, Douglas N Greve wrote:
Prapti Gautam wrote:
Dear freesurfers,
I have a few additional questions regarding qdec.
- Is it possible to specify in qdec so that the results of the analyses
run are saved in a separate destination than the SUBJECTS_DIR?
I'll leave this for Nick.
- I have read in the qdec tutorial that it is possible to select up to
4 variables to regress in analyses, but I can only select 1 discrete and 2 continuous variables in my version. I am running Freesurfer v4.3.0. Does this mean I have an older version of qdec that only allows selection of 2 continuous variables and I need to update to a newer version of freesurfer??
The 4 variables are 2 discrete and 2 continuous. This is all it does right now. If you need more, you'll have to run mri_glmfit manually.
doug
Thank you for your help,
Prapti
-----Original Message----- From: Allison Stevens [mailto:astevens@nmr.mgh.harvard.edu] Sent: Friday, 10 July 2009 4:15 AM To: Prapti Gautam Cc: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] qdec question
The newest version of FreeSurfer does not contain any changes to qdec I believe. Allison
freesurfer@nmr.mgh.harvard.edu
-
Allison Stevens -
Douglas N Greve -
Nick Schmansky -
Prapti Gautam