Hello Experts, I am analyzing cortical thickness of two groups (APOE 4carries vs. noncarriers) in freesurfer with age as a co-variate. I am uncertain about the statistical differences behind: 1)Does the correlation between thickness and age accounting for APOE, differ from 0?
in contrast to: 2)Does the thickness-age correlation differ between 1 and 0? I get significant results after FDR correction for the first but not for the second analysis. thank you for your help, catherine
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