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Thank you Douglas. That’s much clearer. I do however, have a subject without a gender disclosure. Would I set up my class and contrasts as:
5 classes: PatentientsMale, PatientsFemale, HCMale, HCFemale, HCNa
then use contrast [0.5 0.5 -0.33 -0.33 -0.33 0 0 0 0 0 ...]?
Best,
Liliana