st: count

[Tina Hernandez-Boussard <boussard@stanford.edu>]

Hi All,

I am trying to get a count of procedures at a hospital by year and  
store this number.

In SAS I can do this:

proc freq  data=tmp noprint;   tables year * hospid / out=t_tmp;   run;


I am trying to use count in stata, but I am unable to store count of  
hospitals by year.  I get the count of hospitals by year with this  
command

by hospid: count if year == 1999

Any help??

Thanks

Tina
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