Re: st: Difference-in-Difference and matching using -diff

[James Bernard <jamesstatalist@gmail.com>]

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/