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Re: st: Keeping observations


From   n j cox <n.j.cox@durham.ac.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Keeping observations
Date   Thu, 09 Jun 2005 13:08:45 +0100

. sort id, stable
. by id: keep if employ[1] == 2

Patricia Vera Rojas

I have :

id employ
1 2
2 1
3 2
3 2
4 2
4 1
5 1
5 2
6 1
6 1

where id= subject identification and employ=1 if the person is employed and employ=2 if the person
is unemployed.
I want to keep in the data those subjects whose are unemployed in the first observation (employ=2)
without losing their second observation if they are observed more than once, that is:

id employ
1 2
3 2
3 2
4 2
4 1

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