Hi everyone,
I am trying to test if there is a difference in one variable (quantitative) due to another variable (binary but different for each twin).
These variables are related and I want to test if there are different “subtypes” of that disorder (quantitative variable) depending on the value of the other variable (binary variable).
I was thinking to do a moderation analysis (as Rob suggested me in a previous post) as follows:
1-Quantitate variable
2-Moderation variable coded 1:concordant type A; 2: concordant type B; 3: discordant
I would like to know if this approach is correct and If I get significant different values of heritability between type A and Type B, could I conclude that for that disorder could exist different etiologies
Thank you so much in advance.