Hi list, I have done an analysis using QDEC and now I would like to do set up similar statistical analysis in SPSS on some parcellated structures.
I have the following setup in QDEC: 2 cohorts (patients, healthy control subjects) Continuous variable : demeaned Age Nuisance Factor: demeaned intracranial volume DODS I'm interested in the effect of age i.e. "differences in the thickness-age correlation between the patients and healthy subjects" . Now my question is if I the following set up would be correct for doing the stats on slopes in SPSS: Univariate General Linear Model Dependent variable: ROI Fixed Factor: group (i.e. patient or healthy control) Covariate: demeaned age AND demeaned intracranial volume and then I also add an interaction term of demeaned_age*group to be the equivalent to the difference between thickness-age correlation in patients vs. healthy subjects that I have in QDEC. Is this correct? Thanks, Nasim _______________________________________________ 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.
