Hi Heidi, That will test the effect of the continuous variable averaged over the 3 groups. doug
On 05/29/2013 10:40 AM, Jacobs H (NP) wrote: > Hi FreeSurfers, > > I have a more statistical question: > > I have three groups of subjects and I want to examine the effect of a > continuous variable (cognition). Is it possible to examine three groups? Or > should I do pairwise comparisons? > What would the contrast than look like? Something like this: > > 0 0 0 0 0 0 0.33 0.33 0.33 > > (first three zeros for the three groups; three zeros for age-correction; > three weights for cognition scores)?? > > Thanks! > > Heidi > > > ================================================ > Dr. Heidi Jacobs > Postdoc researcher > Faculty of Health, Medicine and Life Sciences > School for Mental Health and Neurosciences > Division Cognitive Neuropsychiatry and Clinical Neurosciences > Alzheimer Center Limburg > h.jac...@maastrichtuniversity.nl > www.maastrichtuniversity.nl > www.heidijacobs.nl > > Dr. Tanslaan 12, 6229 ET Maastricht > P.O. Box 616, 6200 MD Maastricht, The Netherlands > T +31 43 38 84 090 F +31 43 38 84 092 > ================================================ > _______________________________________________ > 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.
