you can select age, IQ and mean thickness as 'nuisance' variables, and
then your group can be the main discrete variable.
as for mean thickness causing a failure, it it probably the case that
the values are too close to each other. treating mean thickness as a
covariate is probably not necessary
Hello Freesurfer's,
I am using QDEC and I have created and FSGD descriptor file with 2 groups (pts
and ctrls) and three continuous variables: age, IQ and mean thickness. I have 2
questions:
1. I can only choose 2 covariates at one time? How can I choose all three
covariates in one model in