I want only the records corresponding to the first procedure 1 dates and
not all cases where procedure 1 was done. For example if procedure 1 was
done on a patient on date1, date1, date1 and again on date2, date2,
date2, I need only the first three cases corresponding to date1, date1,
date1.
Raj Natarajan
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Svend Juul
Sent: Wednesday, December 15, 2004 10:40 AM
To: [email protected]
Subject: Re: st: Creating a dataset from a file with multiple
observations
Raj Natarajan wanted (if I understood it right) to reduce a dataset to
the observations where Procedure==1.
This is simple:
keep if Procedure==1
But I have the feeling that the question is more complex. Is it?
Svend Juul
__________________________________________
Svend Juul
Institut for Epidemiologi og Socialmedicin (Dept. Epidemiology and
Social Medicine) Vennelyst Boulevard 6 DK-8000 Aarhus C, Denmark Phone,
work: +45 8942 6090 Phone, home: +45 8693 7796
Fax: +45 8613 1580
E-mail: [email protected]
_________________________________________
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