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st: Re: Loop syntax


From   Janet Hill <janethill73@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   st: Re: Loop syntax
Date   Wed, 26 Mar 2008 15:49:44 +0000 (GMT)

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
}
}
}

but the value of tcount never changes from 0.

Could somebody please explain the correct syntax.
Thanks,
Janet




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