Message-ID: <Pine.LNX.4.21.0005252113280.30253-100000@pc16.stat.umu.se>
Date: 2000-05-25T19:25:14Z
From: Göran Broström
Subject: Kaplan-Meier for left truncated data?
In-Reply-To: <Pine.LNX.4.21.0005242012330.27454-100000@pc16.stat.umu.se>
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!
G?ran
> 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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