[R] Kaplan-Meier for left truncated data?

Fredrik Lundgren fredrik.lundgren at norrkoping.mail.telia.com
Fri May 26 07:50:23 CEST 2000


R-users!

How do I ask for the 'baseline hazard' of a coxph fit??

Fredrik Lundgren
----- Ursprungligt meddelande ----- 
Från: "gb" <gb at stat.umu.se>
Till: <r-help at stat.math.ethz.ch>
Skickat: den 25 maj 2000 21:25
Ämne: Re: [R] Kaplan-Meier for left truncated data?


> 
> I have got two late answers to this question, from Mai Zhou and Bendix
> Carstensen. Both point out a 'trick': Use  coxph  to fit a model with
> no covariates and ask for the 'baseline hazard' of that fit!  
> Unlike  survfit,  coxph  allows for left truncated data.
> 
> Thanks to both!
> 
> Göran
> 
> > On Sun, 21 May 2000, gb wrote:
> > 
> > > 
> > > Is there a function somewhere for estimating the survivor function
> > > (plus confidence limits) when data are both left truncated and right
> > > censored?  survfit in  survival5  doesn't like left truncation.
> 
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