Thank you Prof. Greve. Hope all is well on your side. On Thu, Jun 14, 2012 at 8:03 PM, Douglas N Greve <gr...@nmr.mgh.harvard.edu>wrote:
> It is okay to study a single cohort with covariates. > doug > > On 06/14/2012 11:54 AM, Dhinakaran Chinappen wrote: > > Dear Freesurfer Experts, > > > > For one of our studies, I have used QDEC to analyze the relationship > > between cortical thickness and a series of variables. > > > > I wanted to double check to see if it is okie to have a qdec table > > which only includes the diseased population and the covariates (such > > as FSIQ). > > > > After multiple comparison correction, a few clusters were obtained, > > where the correlation between thickness and the covariate differs from > > zero. > > > > Please let me know if QDEC should only be used for comparison between > > groups or if it okie to study only one cohort and subsequently analyze > > the trend of a variable with cortical thickness. > > > > Best, > > Dhinakaran. > > > > > > > > _______________________________________________ > > 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. > > --
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