Hi Marisa, I also use DEA now for my research. Could you please tell more about how exactly we can install the most recent ado files? I mean should we put the "dea.ado" in the "ado>base>d" folder and the "ldea.ado" in the "ado>base>l" folder? How about the "malmq", did you also use it, or just with the dea.ado? I once tried to use a dataset that has 2148 dmus and weights 176 KB, but it took too long. I would really appreciate if you can share how did you manage to do the DEA with such large data....