I'd probably normalize everyting
On 2/1/17 7:44 AM, Jennifer Szeto wrote:
Thank you very much Doug!
It works when I include only normalized age and BDI in the qdec.table.dat file, but not when I include also all the other variables of interest in the file.
As normalizing works for BDI, will I have to normalize all the variables of interest as well? Or just the ones that gives an error message?
Thanks, Jen
On 31 Jan. 2017, at 4:18 am, Douglas N Greve greve@nmr.mgh.harvard.edu wrote:
I just tried normalizing the BDI and age on the fsgd file that you sent, and it did work. Can you double check? If it is still not working, then send both the fsgd file and the Xg.dat file
On 01/27/2017 05:06 PM, Jennifer Szeto wrote:
*From:*Jennifer Szeto jennifer_szeto@hotmail.com *Sent:* 24 January 2017 23:31 *To:* Freesurfer support list *Subject:* Re: [Freesurfer] QDEC - Controlling for gender
Hi Doug,
That doesn't seem to work either....? Is there anything else I should try/ does my fsgd file look alright?
Thanks for your help,
Jen
*From:* freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Douglas N Greve greve@nmr.mgh.harvard.edu *Sent:* 24 January 2017 04:28 *To:* freesurfer@nmr.mgh.harvard.edu *Subject:* Re: [Freesurfer] QDEC - Controlling for gender Have you tried normalizing BDI and age? By normalizing, I mean subtracting the mean and dividing by the stddev
On 01/20/2017 05:46 PM, Jennifer Szeto wrote:
Sorry, hope this is the right one!
Thanks,
Jen
*From:* freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Douglas Greve greve@nmr.mgh.harvard.edu *Sent:* 20 January 2017 22:26 *To:* freesurfer@nmr.mgh.harvard.edu *Subject:* Re: [Freesurfer] QDEC - Controlling for gender
sorry, I wanted the y.fsgd file from the qdec output directory
On 1/20/17 4:46 PM, Jennifer Szeto wrote:
Thank you very much Doug,
Please find attached the files I have been using to run the QDEC analyses.
Jen
*From:* freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Douglas Greve greve@nmr.mgh.harvard.edu *Sent:* 20 January 2017 15:27 *To:* freesurfer@nmr.mgh.harvard.edu *Subject:* Re: [Freesurfer] QDEC - Controlling for gender
can you send the fsgd file?
On 1/20/17 6:54 AM, Jennifer Szeto wrote:
Thanks Doug,
That seem to work for some of my variables (e.g. depression) when I put gender and diagnosis as fixed factors, depression as covariate, and age as nuisance factor but not for others (e.g. anxiety). I keep getting error messages when trying to run some of my variables as covariates (please see attached). Is there anything I can do to fix this?
Thanks, Jen
*From:* freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Douglas N Greve greve@nmr.mgh.harvard.edu *Sent:* 19 January 2017 21:48 *To:* freesurfer@nmr.mgh.harvard.edu *Subject:* Re: [Freesurfer] QDEC - Controlling for gender Just include it as a categorical factor. When you look at your
contrast
of interest, it will be with respect to regressing out gender
> On 01/15/2017 08:55 PM, Jennifer Szeto wrote: > > Hi Freesurfer experts, > > > I am trying to compare cortical thickness between groups while > controlling for age and gender using QDEC. However, _gender_ is not > showing up as a covariate variable or a nuisance factor (only
showing
> up as a fixed factor), I am wondering how I could control for gender > in this case? > > > Thank you very much, > > Jen > > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
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