Dear Freesurfer experts, I'm wondering how to set a 2x2x2 anova
(diagnosis)x(gender)x(apoe)
g1MaleE4 g1MalenoE4 g1FemaleE4 g1FemalenoE4 g2MaleE4 g2MalenoE4 g2FemaleE4 g2FemalenoE4
option 1 [1 1 -1 -1 0 0 0 0] [1 1 0 0 -1 -1 0 0] [1 1 0 0 0 0 -1 -1] /2
option 2 [1 1 1 1 -1 -1 -1 -1] [1 1 -1 -1 1 1 -1 -1] [1 -1 1 -1 1 -1 1 -1] /4
And really have no idea about the interections between factors. Could you tell me for example how to evaluate the diagnosis x gender interaction effect and the interaction among the three factors (diagnosis x gender x apoe).
Bests regards, Gabriel