d stpyear.  Calculation of person-years, incidence rates and SMR
d Program by Mario A. Cleves, Stata Corporation <mcleves@@stata.com>.

^stpyear^ calculates person-years, incidence rates or SMR per time 
intervals specified by ^at(^numlist^)^.

^stpyear^ also implements computation of SMR's, after merging the data with 
a suitable file of "standard" rates specified with the ^using()^ option.

d
d ^stpyear^ calculates person-years, incidence rates or 
d SMR specified by ^at(^numlist^)^
d
d Use  
d . stpyear, at(10(5)40)
d
f stpyear/stpyear.ado
f stpyear/strate2.ado
f stpyear/stpyear.hlp