I have 200 patients who have prescriptions from a pool of 20 drugs, and 100 normal control volunteers who do not take any of the drugs in the pool of 20. Each patient has 0 to 6 prescriptions from the pool of 20 in random combinations. Some of these patients have elevated plasma levels of...
I am currently in need of syntax to run a higher order EFA on SPSS. I have found several that take me through preliminary factor analysis, but I cannot find a way to create the second order factors.