Dear all,
I'm running some gene analysis to find out whether the genotype of a
certain SNP is related to any region of the brain.
My model is:
brain image ~ Genotype + (age, gender, ethnic, anxiety)
(age, gender, ethnic, anxiety are covariates in my model)
So the genotype is a categorical variable (three groups: AA, AB and
BB) and I want to use ANCOVA model to test whether there's a gene
effect on the brain.
How should I define the F contrast matrix? Is it [0 1 0 0 0 0]?
Thank you.
Best Regards,
Li Yue
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