I think this is the contrast you need 0 0 0 0 0 0 0 0 0.5 0.5 0.5 0.5 - 0.5 -0.5 -0.5 -0.5
On 10/19/2014 06:33 PM, Bronwyn Overs wrote: > Dear Freesurfer Mailing List, > > I am running a GLM in freesurfer 2 categorical variables (2 levels), > and three continuous variables (age, prs, & sles). My fsgd file looks > like this: > > GroupDescriptorFile 1 > Title GLM_sles-group-gender-age > Class genderMale-groupControl > Class genderFemale-groupControl > Class genderMale-groupAtRisk > Class genderFemale-groupAtRisk > Variables age prs sles > Input ID_001 genderFemale-groupAtRisk 20 21 96 > Input ID_002 genderFemale-groupControl 21 13 79 > ... > > I want to test for an interaction between prs and sles, while > controlling for age, gender, and group. Can you tell me if the > following contrast vector will correctly test for this interaction: > > 0 0 0 0 0 0 0 0 0 0 0 0 > 0.5 0.5 0.5 0.5 > 0 0 0 0 0 0 0 0 0.5 0.5 0.5 0.5 > 0 0 0 0 > > -- > > Kind regards, > > Bronwyn Overs > Research Assistant > > Neuroscience Research Australia > > Neuroscience Research Australia > Margarete Ainsworth Building > Barker Street Randwick Sydney NSW 2031 Australia > *M* 0411 308 769 *T* +61 2 9399 1883 *F* +61 2 9399 1265 > > neura.edu.au <http://neura.edu.au> > > Follow @neuraustralia on twitter > <https://twitter.com/neuraustralia>Follow NeuRA on facebook > <https://www.facebook.com/NeuroscienceResearchAustralia>Subscribe to > the NeuRA Magazine <http://www.neura.edu.au/help-research/subscribe> > > > > _______________________________________________ > 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.
