I believe that what you are looking for is r(N). 
see "return list"
. count
 1925
. return list
scalars:
                 r(N) =  1925
scott
On 5/5/05, Sascha Robert <[email protected]> wrote:
> After having learned quiet a lot from Nick W. telling me the trick
> 
> . statsby "ktau x y " TauB=r(tau_b) P=r(p) , by(z) saving(myfile)
> 
> for STATA 8 I am now trying something like
> 
> . statsby "count" c=r("???"), by(x y z) saving(myfile)
> 
> Well, I've seen the ktau.ado file... but there is no count.ado to check
> what "???" could be. Any hints?
> 
> Sascha
> 
> --
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