Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

RE: st: Keeping observations

From   "Svend Juul" <[email protected]>
To   <[email protected]>
Subject   RE: st: Keeping observations
Date   Thu, 9 Jun 2005 11:35:29 +0200


The following commands will do. The purpose of -obsno- is to make sure
that the sort order within subjects is preserved; you might have a date
variable to take care of that.

gen obsno=_n
sort id obsno
by id: gen emp2=2 if employ[1]==2
keep if emp2==2

Hope this helps


Svend Juul
Institut for Folkesundhed, Afdeling for Epidemiologi
(Institute of Public Health, Department of Epidemiology)
Vennelyst Boulevard 6
DK-8000  Aarhus C, Denmark
Phone: +45 8942 6090
Home:  +45 8693 7796
Email: [email protected]

*   For searches and help try:

© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index