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st: Picking Groups with Complete Data on Variable X


From   micdepo mic <micdepo@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Picking Groups with Complete Data on Variable X
Date   Sat, 10 Dec 2011 20:09:08 +0200

Hello,


I would like to extract from a panel dataset only the individuals that
have complete data on a variable X.

Say I start with:

 egen group = group(id_number)


Then, I would like to keep only the groups that have nonempty values
on variable X for all years t=0 to t=T.


Would you please help me with this?

Thanks so much!
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