R help - Apr 2008 - How to fit parametric survival model using counting process data

Hi,

I was trying to fit a parametric survival model with Weibull distribution on
counting process type of data (NOT interval censor data), but the
survreg(Surv(T1,T2,event)~x,data,dist="weibull") did not seem to work.
Anyone can help me with that?

Thanks,

Rachel
Memorial Sloan-Kettering Cancer Center
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> I was trying to fit a parametric survival model with Weibull distribution
on
> counting process type of data (NOT interval censor data), but the
> survreg(Surv(T1,T2,event)~x,data,dist="weibull") did not seem to
work.
> Anyone can help me with that?
 The survreg function does not support time-dependent covariates or multiple 
events per subject, i.e., 2 of primary reasons to use (start, stop] data. 
I've
thought about it, and it is on my "someday" list.  It is a fairly
difficult
update though, so "someday" may be a loooooong way away.  (A major
upgrade to
coxme is first, to support more models and an lmer-like syntax).
 
 	Terry Therneau