From: sousimou on 4 Feb 2010 08:19 Hi, My question is : in term of interpretation what i the difference between these two case in proc phreg : proc phreg data=table; model (start, stop)*censor(0)=group; run; and proc phreg data=table; model duration*censor(0)=group; run; start: start day of follow up period stop: day on onset of event in case of event arise or stop day of follow up period in case of no event duration = stop-start In both cases, what would be the result (similar or not) and why ? thanks thank you
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