Thanks Maarten
Using stci one can CI for the ristricted mean (rmean), but it doesn't work for me with the extended mean (emain). I am also unclear about how Stata extend the survival curve; is it the simple exponential extension e.g exp(- beta*t)?
Zakariya
----------------------------------------
> Date: Sun, 20 Apr 2008 13:25:45 +0100
> From: [email protected]
> Subject: Re: Kaplan Meier [was: st: Date: Sat, 19 Apr 2008 23:56:52 +0000]
> To: [email protected]
>
> --- Zakariya Mohammed wrote:
>> Any idea about how Kaplan-Meier survival curve is been extended? What
>> is the extrapolation function that used and how the parameter of the
>> extrapolation function are estimated? Can Stata provide a confidence
>> interval for the extended mean?
>
> The logic behind the Kaplan-Meier estimate is discussed in this paper:
> http://home.fsw.vu.nl/m.buis/wp/survival.htmln)
>
> You can get confidence intervals with the -sts- command.
>
> Hope this helps,
> Maarten
>
> -----------------------------------------
> Maarten L. Buis
> Department of Social Research Methodology
> Vrije Universiteit Amsterdam
> Boelelaan 1081
> 1081 HV Amsterdam
> The Netherlands
>
> visiting address:
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