Hi Agustin, You should be able to get which observations were matched through the "cem_matched" variable that is added to the data after running cem. Also take a look at the "cem_strata" variable. Observations in the same strata are matched to each other. Hope that helps! Cheers, Matt ~~~~~~~~~~~ Matthew Blackwell Assistant Professor of Political Science University of Rochester url: http://www.mattblackwell.org On Wed, Jul 31, 2013 at 12:49 AM, Agustin Büchert &lt;agusbuchert(a)gmail.com <mailto:agusbuchert@gmail.com>> wrote: Hello, I am running the following command on cem: *cem **/var1 var2 var3/**, tr(**/tr_var/**) k2k* I get the output: *Matching Summary:** **-----------------** **Number of strata: 19** **Number of matched strata: 8** ** ** 0 1** **All 2327 190** **Matched 171 171** **Unmatched 2156 19* Now I need to get the list of all the 171 matches. I need to know exactly which 171 treated samples where matched to which 171 control samples, so that I can obtain experimental (output) data only from those, and not the whole 2327 + 190 dataset. I assume this data is stored in *r(match_table)*, but I do not know how to retrieve it. Thanks in advance! -- -- Agustín Büchert http://about.me/agusbuchert - -- cem Mailing List, served by HUIT Send messages: cem(a)lists.gking.harvard.edu <mailto:cem@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 <mailto:Cem@lists.gking.harvard.edu> To unsubscribe from this list or get other information: https://lists.gking.harvard.edu/mailman/listinfo/cem