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st: panel data-dropping all observations for the identifier when certain variable value is missing


From   Sabrina Helmut <vitamint@hotmail.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: panel data-dropping all observations for the identifier when certain variable value is missing
Date   Wed, 6 Jul 2011 02:07:14 +0200


Dear all,

I am struggling with the following:

I have firm-year observations for the years 2003-2010. For cases where the last value for the variable <offdate>, which is a variable containing dates, is older than a 
date in 2008 (so date in 2007, 2006,...) then stata shall drop the firm/identifier at all, so for 
every year. Then, I want stata to show me for every firm/identifier the last entry for the variable <offdate>, which could then either be a date in 2008, 2009 or 2010. Which commands could help me doing this?

Thanks, 
Sabrina




 		 	   		   		 	   		   		 	   		  
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