Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

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


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: How to count event using condition over time
Date   Wed, 29 Aug 2007 18:47:40 +0100

For this structure, using -egen, rowmax()- 
and comparing the result with 5 is a alternative. 

Nick 
n.j.cox@durham.ac.uk 

Maarten buis
 
> --- Ziad El-Khatib <Ziad.El-Khatib@ki.se> wrote:
> > I dataset, looking at patients at different time points (week1,
> > week2, week3 .... week12) and measuring their adherence.
> > I want to count patients who did report poor adherence for at least
> > one time, i.e. did report adherence above 5 for at least once
> > during the 12 weeks of observation.
> 
> *---------- 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 -------------
> (For more on how to use examples I sent to the Statalist, see
> http://home.fsw.vu.nl/m.buis/stata/exampleFAQ.html )
> 

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index