Well, I think this is the first question to the group since list ownership changed. I wonder how many people are signed up now? It hasn't been a very active list for a long time. Anyway, here is my question.
I have a dataset with multiple imputations. It is from a five-arm GRT. One arm is a control and the other four are active. I want to test for variation in mean responses across the four active arms. Proc Mixed will give me a test statistic based on each multiple imputation. But how do I combine these? One of colleagues found something in the HLM manual that would suggest that the replicates of test statistics other than t-statistics are averaged with no attention paid to the variability among them. Sound accurate about HLM? Is that the best we can do? David Judkins Senior Statistician Westat 1650 Research Boulevard Rockville, MD 20850 (301) 315-5970 [email protected]
