Dear Doug,
In the case of a 3x2 design the post hoc contrast for evaluating the
interaction effect would be as follows:
D1Male
D1Female
D2Male
D2Female
D3Male
D3Female
ANOVA to test the effect of diagnosis (D1, D2, D3) only for males
[ 1 0 -1 0 0 0]/2
[ 1 0 0 0 -1 0]/2
ANOVA to test the effect of diagnosis (D1, D2, D3) only for females
[ 0 1 0 -1 0 0]/2
[ 0 1 0 0 0 -1]/2
Is this correct?
Many thanks again.
Gabriel
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