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From | James Bernard <jamesstatalist@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: Difference-in-Difference and matching using -diff |
Date | Thu, 20 Jun 2013 21:59:57 +0800 |
I am re-sending my question on the command On Wed, Jun 19, 2013 at 7:32 PM, James Bernard <jamesstatalist@gmail.com> wrote: > Sorry for this. I never realized that there is such thing > > -diff comes from SJ: http://ideas.repec.org/p/pra/mprapa/43943.html > > so is -psocre. It is from SJ : > http://www.stata-journal.com/sjpdf.html?articlenum=st0026 > > Thanks, > James > > > > On Wed, Jun 19, 2013 at 7:02 PM, Nick Cox <njcoxstata@gmail.com> wrote: >> Although you have very recently had a reminder of our practices you >> still persist in not explaining where user-written programs come from. >> -pscore- and -diff- both need to be explained. Suggested forms are >> given at >> >> http://www.stata.com/support/faqs/resources/statalist-faq/#stata >> >> Many people are lax on this, but that is no reason for you to ignore a >> longstanding request. >> >> Nick >> njcoxstata@gmail.com >> >> >> On 19 June 2013 11:38, James Bernard <jamesstatalist@gmail.com> wrote: >> >>> the user-written command -diff seems like a panacea for all the >>> problems one may face in doing propensity score matching and >>> difference-in-difference. It is fairly simple to implement and there >>> are enough options to work with. >>> >>> A good difference-in-difference analysis involves matching of the >>> control and treatment groups, so that they are very similar in every >>> possible way, except receiving the treatment. Matching is often done >>> via propensity score matching (-pscore) etc. >>> >>> I would like to know if any of you have used this command. How >>> reliable is it? Can I truly say that I did propensity score matching >>> and then did difference-in-difference by just running diff and >>> supplying it with control variables. >> * >> * For searches and help try: >> * http://www.stata.com/help.cgi?search >> * http://www.stata.com/support/faqs/resources/statalist-faq/ >> * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/