Does this mean that if you label them something else, the problem goes away?
doug Dominic Dwyer wrote: > Hi all, > > It seems that the post below is the case for both QDEC1.2 and 1.4, but only > when you have two discrete variables with cases labeled as "1" and "2" in > both. > > Cheers, > > Dominic > > On 28/1/11 1:58 PM, "Dominic Dwyer" <dwy...@unimelb.edu.au> wrote: > > >> Dear developers, >> >> I recently found that if you have two discrete variables in QDEC, then the >> order in which you select them in the design tab drastically effects results. >> It appears that the selection dictates the definition of the covariate. >> >> In particular, regardless of the comparison you choose to view in the display >> tab (i.e. "Does the average thickness, accounting for X, differ between 1 & >> 2" >> OR "Does ..., accounting for Y, differ between 1 & 2") the results depend on >> what you click in the design tab rather than these definitions. >> >> Is this correct? If so, then how do we verify that the contrast that we think >> we're testing is correct? Should we just not use QDEC 1.2 and set up the >> models manually? >> >> Many thanks for your help. >> >> best, >> >> Dominic >> >> PS. I suspect that this problem has been fixed in the new version, but it >> wouldn't work with our data which has been processed with FS4.5. On this >> note, >> is there a way that around this to use FS4.5 images with the new QDEC? >> >> >> > > _______________________________________________ > 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.
