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Re: st: N visits per patient


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: N visits per patient
Date   Sun, 28 Oct 2007 13:59:36 +0000 (GMT)

--- Ziad El-Khatib <Ziad.El-Khatib@ki.se> wrote:
> in the same dataset each patient did come more than once, is it
> possible to count n of visits per patient using patientID number for
> example?

bys patientID: gen nvisits = _N

-- Maarten

-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


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