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Re: st: Diff in Diff using xtreg with respect to a base year


From   Nick Cox <njcoxstata@gmail.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Diff in Diff using xtreg with respect to a base year
Date   Fri, 26 Apr 2013 14:19:11 +0100

You posted the same question four hours ago. Repeated postings to
Statalist are allowed -- once and once only -- but repeating a
question that quickly is poor practice. Either way, you have used up
your quota and must now wait, please, for an answer. Meanwhile, there
is plenty on this kind of problem in the Statalist archives to read.

My own guess is that the probability of a detailed answer to this kind
of question is low. People react much more willingly to specific
questions than to general ones, and more willingly to questions in
which the user shows some Stata code, rather than none at all.

Nick
njcoxstata@gmail.com


On 26 April 2013 14:00, 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.
>
> Here is a list of my variables with description for better understanding:
>
>  id - Code of municipality
> year - year
> amalg - participation variable
>  pop
>  area
> popdens
>  unemplrate
>  gdp_pc
>  capitalregion
>  staffexp_pc
>  interestexp_pc
>  adminexp_pc
>  totexp_pc
>  grants_pc
>  budgetsurplus_pc
>  fiscalpressure_pc
>  totrevenues_pc
>  currentexp_pc
>  popsquare
> usearea_pc
>  births_pthc
> immigration_pthc
>  young_pthc
>  old_pthc
> netimmigration_pthc
>
> Kind regards,
>
> Sebastian Blesse
>
>
>
> --
> View this message in context: http://statalist.1588530.n2.nabble.com/Diff-in-Diff-using-xtreg-with-respect-to-a-base-year-tp7580353.html
> Sent from the Statalist mailing list archive at Nabble.com.
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