[R] AFT model time-dependent with weibull distribution

JPF xpfenech at gmail.com
Sat Aug 20 04:19:11 CEST 2011


JPF wrote:
> 
> 
> 
> weibullaft<-aftreg(Surv(sta,time,S) ~ TDC1 + TIC1, dist="weibull",
> data.frame=Data) 
> 
> ## aftreg gives an error when I add an ID argument... That should be used
> for controlling for time-varying variables.
> 
> Error in aftreg.fit(X, Y, dist, strats, offset, init, shape, id, control, 
> : 
>   *Overlapping intervals for id  2 *
>   
> From help(aftreg): id If there are more than one spell per individual, it
> is essential to keep spells together by the id argument. This allows for
> time-varying covariates. 
> 
> 

This is solved. It gave the overlapping intervals error, but now it is
solved: /id=ID/, just as before.  


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