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Re: st: How to count event using condition over time


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: How to count event using condition over time
Date   Wed, 29 Aug 2007 11:03:59 +0100 (BST)

-- I wrote:
*---------- begin example ------------
> /* generate some data */
> drop _all
> set obs 100
> forvalues i = 1/12 {
> 	gen week`i' = ceil(6*uniform())
> }
> 
> /*at least once poor adherence*/
> gen poor = 0
> forvalues i = 1/12 {
>     replace poor = 1 if week`i' > 5
> }
>
> /*count number of poor adherence patients*/
> count if poor == 1
> *--------------- end example -------------

It is probably safer to replace the line:
replace poor = 1 if week`i' > 5

with:
replace poor = 1 if week`i' > 5 & week`i' < .

(see: http://home.fsw.vu.nl/m.buis/stata/exampleFAQ.html#if<. )

-- 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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