[R] plot survival points

[Thomas Lumley]

On Thu, 2 May 2002, Ronaldo Reis Jr. wrote:

> Hi all,
> I have a little problem.
> I make an weibull survival analysis using the survival package. It,s OK, them
> I have the functions. I plot this funcions with curve(). I want to make a
> plot with the real survival points (proportion of alive x time) and them add
> the curves to points. I have the time to dead, the censor data and my
> trataments. To analysis the model is:
> model1 <- survreg(Surv(time,censor)~trat)
> Exist any function in R to plot the real point (proportion of alive in time)?

plot(survfit(Surv(time,censor)~trt))

or to superimpose on an existing plot

lines(survfit(Surv(time,censor)~trt))

	-thomas


Thomas Lumley			Asst. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle

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