* Do file showing use of stcomply command, using the example MASS trial data subset. 
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use mass, clear

stset timeout, id(id) origin(dateran) fail(aaadeath) scale(365.25)
stcox status
stcomply status scanned, graph grfit

set seed 100
gen wt=1
replace wt=-5129/4994 if status==2 & scanned==0
gen exposed=status==2 & scanned==1
cox timeout exposed [iw=wt], dead(aaadeath) nohr
version 7: bs "cox timeout exposed [iw=wt], dead(aaadeath)" "_b[exposed]", reps(1000)