Re: st: count (Stata 8)

[Heather Gold <heg2001@med.cornell.edu>]

At 11:44 AM 5/10/2005, I wrote:
> Thanks for the replies thus far.
> I'd prefer a scalar so I don't have to generate the extra variables with a 
> value attached to each subject.
>
> Based on all the comments you have generously offered, I'm closer to a 
> solution:
>
> forvalues i=1995/1998 {
>         count if dxflag==1 & year==`i'
>         scalar cases`i' = r(N)
>         count if year==`i'
>         scalar total`i' = r(N)
>         scalar prev`i' = cases`i'/total`i'
> }
> The problem is this doesn't give me different denominators (ie, total for 
> each year)...thoughts?
NO - this isn't a problem. This scalar approach works just an error on my 
part...
Debate about whether to use -generate- instead. Offline, Austin Nichols 
suggested a way with -generate- that excludes 1 case from the numerator to 
generate prevalence for everyone else, not the case at hand. I'll send to 
you if you're interested.

Thanks again for all the replies -
Heather 

*
*   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/