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.
