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Hi Freesurfer experts,
Here, I want to design a simple group comparison (two levels: Case vs. Control) and also count for 4 covariates (two continuous and two categoricals). However, the GLM model cannot recognize my discrete variables. What do you suggest to change?
FSDG file:
GroupDescriptorFile 1 Title MyStudy Class Control Class Case Variables age gender race eTIV Input sub001_base Control 85 Female White 1350519 Contrast:
Design matrix for Case-Control and regress out the effect of age,
gender, race, and eTIV. -1 1 0 0 0 0 0 0 0 0
Best, Zeng