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| From | Austin Nichols <austinnichols@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: Differebnce-in-Difference and Stata |
| Date | Tue, 7 May 2013 17:12:37 -0400 |
James Bernard <jamesstatalist@gmail.com> : Diff in diff is just a regression with appropriate interaction terms, and in general you can put any kind of fixed effects in a count model that you want to. As for diff in diff in a nonlinear model more generally, the Statalist archives are full of relevant material e.g. http://www.stata.com/statalist/archive/2009-09/msg00901.html http://www.stata.com/statalist/archive/2012-02/msg00576.html and read http://ftp.iza.org/dp3478.pdf http://kuznets.fas.harvard.edu/~athey/CIC.pdf to aid thinking about what specific kind of effect you want to estimate. On Tue, May 7, 2013 at 10:10 AM, James Bernard <jamesstatalist@gmail.com> wrote: > Hi all, > > There is a user written Stata command for Difference-in-Difference > (DD) by: Villa, Juan M. 2011. DIFF: Stata Module to Perform > Differences in Differences Estimation. Statistical Software > Components. Boston College Department of Economics > > It seems like a nice and reliable command, but it is written for a > linear model. I have two questions: > > 1- Can the logic of DD be applied to non-linear panel models (count models)? > > 2- Does anyone know of a command for a non-linear DD? * * 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/