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
Hi Catherine, are these two different analyses? Or are they two contrasts from the same analysis? doug
Cat Chong wrote:
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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Cat Chong -
Douglas N Greve