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st: AW: how to drop repeated observations?


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: AW: how to drop repeated observations?
Date   Sat, 21 Feb 2009 23:05:48 +0100

<> 



*************
duplicates drop siren
*************



HTH
Martin

-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von
Isabelle.Roux@ehess.fr
Gesendet: Samstag, 21. Februar 2009 23:03
An: statalist@hsphsun2.harvard.edu
Betreff: st: how to drop repeated observations?

Hello,

I'm new in using Stata and I have a dataset with french
firms'immatriculation numbers (this variable is called siren). I would
like to drop observations when the same siren appears for the second, the
third...time, but I don't achieve to do that.
Thank you very much for your help.

Yours sincerly,

Isabelle Roux


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