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st: data management help


From   mnitkin <mnitkin@bu.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: data management help
Date   Mon, 04 Oct 2004 00:09:45 -0400

I have a data set with 131,000 firm observations over 14 years. Individual firms may be in the data set between 1 and 14 times. I want to keep only those firms that have observations for the entire 14 year period.

I've tried all the tricks I know as well as a number of suggestions on the stata website, but I haven't had any luck.

thanks for the help,
Mindy Nitkin

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