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Re: st: Re: Loop syntax


From   Johannes Geyer <JGeyer@diw.de>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Re: Loop syntax
Date   Wed, 26 Mar 2008 17:05:09 +0100

I have some results on 236 patients and each patient has 57 recordings 
stored in a single variable t. I am trying to count how many of these 
patients have a score of t>0. I tried the following code:

gen tcount=0
forvalues i=1/236{
    forvalues j=1/57{
    if patient==`i' & t>0 {
    then tcount==tcount+1 
    continue
}

I think a loop is unnecessary here  - you just want to count, right? There 
are many solutions, e.g.

count if t >0 & t<.

(saved in r(N))



Johannes


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