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st: Re: Generating index numbers with panel data in long format


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Re: Generating index numbers with panel data in long format
Date   Mon, 15 Jun 2009 20:08:14 +0200

<>

Could you give us a hint what the calculation of the "index number" would look like in your example? I have a feeling that
http://www.stata-journal.com/sjpdf.html?articlenum=pr0004
will be the solution, but just write down what your result should look like...

HTH
Martin
_______________________
----- Original Message ----- From: "Manfred Fleischer" <mf.rott@googlemail.com>
To: <statalist@hsphsun2.harvard.edu>
Sent: Monday, June 15, 2009 7:57 PM
Subject: st: Generating index numbers with panel data in long format


Hi,

Would anyone know whether there exists a possibility to generate index
numbers over time with panel data stored in long format.

The dataset consists of new firm entry and exit rates for German
counties from 1983 to 2004. It looks like this

county-id year entry exit
1 1983 35 33
1 1984 37 36
1 1985 38 39
etc.
2 1983 120 125
2 1984 122 127
2 1985 125 130
etc.

Now I would like to generate index numbers by county for entry and
exit e.g. with 1984 as the base year. I have looked for egen and
time-series commands, but I couldn't find a solution. Maybe the only
solution is to reshape the file into the wide format, compute the
index numbers there and then return with the generated index numbers
in the long format. But that's what I don't know.

Any help is very much appreciated.
Thanks,
Manfred
----------------------------------------------------------------
Manfred Fleischer
D-52159 Roetgen-Rott (Kreis Aachen), Germany
Page: http://www.wzb.eu/mp/mps/people/manfred_fleischer.en.htm

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