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Re: st: List of 3 variables over time?


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: List of 3 variables over time?
Date   Thu, 8 Nov 2007 19:15:52 +0000 (GMT)

--- Ziad El-Khatib <Ziad.El-Khatib@ki.se> wrote:
> Any tips how to show in one table list of freq of variables during
> different time points? Number of patients on drug1, drug2 and drug3
> during visits 2, 4, 8, 12 and 16?
> 
> I am used to show it as
> tab visit drug1 if visit==2
> etc..

assuming that drug1 drug2 and drug3 are coded: 1 = yes, 0 = no:
-table visit, c(sum drug1 sum drug2 sum drug3)-

hope this helps,
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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