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Re: st: Panel data using difference in difference with regard to reference yea


From   Austin Nichols <austinnichols@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Panel data using difference in difference with regard to reference yea
Date   Fri, 26 Apr 2013 10:15:50 -0400

sebastian.blesse <sebastianblesse2404@gmail.com>:
-tsset- then use lag operators:
http://www.stata.com/help.cgi?tsvarlist

On Fri, Apr 26, 2013 at 5:02 AM, sebastian.blesse
<sebastianblesse2404@gmail.com> wrote:
> Hello Statlistusers,
>
> my problem is the following: I have a panel (from 1999 to 2005, observations
> are 410) over municipal expenditure data and several controls and i want to
> run a difference in difference estimation on the expenditure impacts of a
> reform taken place between 2000 and 2003. The only year available before the
> reform was 1999 and i want to compare this to the after reform years 2004
> and 2005. Hence, for Diff in Diff on total expenditures (totexp_pc) i want
> to compare the values from 2000 with those of 1999 as the reference year. I
> just dont know how to formulate this in STATA.
>
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