Yes, though I would probably use [0 0 1 0 0] instead of .5. They will give you identical p-values. Using 1 instead of .5 makes the beta value (ie, regresssion coefficient) more interpretable (if that is something you will look at). doug
On 10/04/2013 07:50 AM, Anita van Loenhoud wrote: > Hi everyone, > > I want to analyze with DOSS the relationship between performance on a > cognitive task (called '15wt') and cortical thickness, in one group, > controlling for the effects for age, gender and education. As a > Freesurfer-newbie, it be would really great if someone could check my > .sfgd file and contrast. > > .sfgd file: > GroupDescriptorFile 1 > Class .00 plus blue (this is the gender part) > Class 1.00 plus red > Variables 15_wt Age Edu > Input 0050 .00 52 73 4 > Input 0051 .00 38 68 5 > Input 0054 1.00 35 57 4 > Input 0060 1.00 46 58 6 > Input 0062 1.00 46 45 5 > etc. > > contrast: > 0 0 .5 0 0 > > Is this correct? Thanks in advance! > > Anita > > > > _______________________________________________ > 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: https://gate.nmr.mgh.harvard.edu/filedrop2 www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ _______________________________________________ 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.
