[R] Kaplan Meier function
Frank E Harrell Jr
f.harrell at vanderbilt.edu
Thu Feb 14 18:57:42 CET 2008
Matthias Gondan wrote:
> Frank E Harrell Jr schrieb:
>> Matthias Gondan wrote:
>>>> data(colon)
>>>> s = survfit(Surv(time, status) ~ rx, data=colon)
>>>> plot(s)
>>>> plot(s, col=1:3)
>>> By the way: Does anyone know a neat way to indicate the number of
>>> patients under risk in
>>> the curve?
>> That's one of many options in the survplot function in the Design
>> package, which uses the survival package.
>
> Ah, thanks! Nice.
>
> data(colon)
> s = survfit(Surv(time, status) ~ rx, data=colon)
> survplot(s, n.risk=TRUE, conf='none', time.inc=500)
>
> Is there an option for drawing small vertical lines if a patient has
> been censored?
No, I haven't been a big enough fan of that to implement it. You can
write a few lines of code that runs after survplot().
Frank
>
> Best wishes,
>
> Matthias
>
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--
Frank E Harrell Jr Professor and Chair School of Medicine
Department of Biostatistics Vanderbilt University
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