Dear Matt, Thanks for the suggestion it worked. Cheers Torb From: mblackwell(a)gov.harvard.edu Date: Mon, 22 Dec 2014 20:01:27 +0000 Subject: Re: [cem] Cem with Difference-in-Difference To: torben_pt(a)hotmail.com; cem(a)lists.gking.harvard.edu Hi Torb, I'm not super familiar with the "diff" command, but a quick search seems to imply that you should use "[weight=cem_weights]" instead of "iweight." Hope that helps! Cheers,Matt ~~~~~~~~~~~Matthew BlackwellAssistant Professor of GovernmentHarvard Universityurl: http://www.mattblackwell.org On Thu Dec 11 2014 at 6:29:32 AM Luck MS <torben_pt(a)hotmail.com> wrote: Dear all, I am using the CEM command in Stata to generate a control sample. Given that I am not restricting the matching to a one-to-one solution I need to use weights by setting up [iweight=cem_weights]. However, I don’t find a way to include the weights in the Difference in differences estimation (syntax diff). Would someone have a suggestion on that? Thanks and best regards, Torb - -- cem Mailing List, served by HUIT Send messages: cem(a)lists.gking.harvard.edu [un]subscribe Options: http://lists.gking.harvard.edu/?info=cem More information on cem: http://gking.harvard.edu/cem Cem mailing list Cem(a)lists.gking.harvard.edu To unsubscribe from this list or get other information: https://lists.gking.harvard.edu/mailman/listinfo/cem