Giorgio Ricchiuti 
Please do you know, whether I'm able to deal with "multiple 
spells" in Stata 8? My dataset consist of N subjects each of 
which can experience multiple transitions. Hence, the hazard 
function may depend upon the number of previous entry to the onset risk
. search survival, faq
points to excellent FAQs by Mario Cleves which I think are 
what you need. 
Nick 
[email protected] 
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