afni.nimh.nih.gov

Hi Everyone,

I have 2 groups and 2 conditions. I looked at the interaction between the group and condition(GroupAvGroupB x Condition1vCondition2);

However, I would like to see if these results hold after factoring out or controlling for a possible covariate (such as Age)

So I want to look at Group A vs Group B x Condition 1 vs Condition 2 - while controlling for covariate.

Can anyone suggest how I should do this?

Best,
Arthur