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st: How to generate "total" observation?


From   Christian Bustamante <cdeb77@gmail.com>
To   Statalist <statalist@hsphsun2.harvard.edu>
Subject   st: How to generate "total" observation?
Date   Sun, 2 Aug 2009 00:48:56 -0500

Hi all,
I have a (possible) dummy question. I have a panel data set like the following:

id  year var1
01 2000 10
01 2001 20
02 2000 15
02 2001 25

I want to create a new observations, with id=03, that sum the var1
over the other ids. Obviously, I'm no going to use this observations
to make some estimation, but total statistics. How can I generate this
aditional observations.

Thanks




-- 
CdeB
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