[amelia] Using data files after imputation - a question

Good Afternoon, My name is Mitzi Lewis and I'm working with Amelia for the first time to help deal with missing data for my dissertation. I've been able to use Amelia to get the five imputed files, outdata_. However, I'm running into problems pooling the results of subsequent regression analysis run on each of these files. Some of the results can be manually pooled, but not all (at least I don't know how to do it; e.g., calculating a pooled p value for 5 Wald statistics or pooled confidence intervals for odds ratios). When I called a research and statistical support center at my university, it was suggested that all I need to do is run the statistical analysis on the last of the imputed files (outdata5 in this case) as each of the imputed data files holds increasingly better imputed data. Is this correct? If so, is there some sort of documentation I could cite to support this decision? The information I've found (before making this call) has centered around how to pool the data. My next step was going to be exploring Zelig, but if the last imputed file from Amelia would be appropriate for analysis, that would save some time (and I'm pressed for time on this particular project). Thanks so much for any guidance you can provide. Mitzi - Amelia mailing list served by Harvard-MIT Data Center [Un]Subscribe/View Archive: http://lists.gking.harvard.edu/?info=amelia More info about Amelia: http://gking.harvard.edu/amelia