For your first question -- read the manual. ?survfit.coxph will reveal the "censor"
argument, which controls the inclusion of points where the curve does not drop.
For your second, "smooth" is in the eye of the beholder, literally. If the reason for a
smooth curve is to plot it, you need to d
f.int=FALSE)
lines(steps.x, steps.y, col=2)
smoothfun <- approxfun(steps.x, steps.y)
plot(smoothfun, from=0, to=3, add=TRUE, col=3, n=1000, lty=2)
-Original Message-
From: Bond, Stephen [mailto:stephen.b...@cibc.com]
Sent: Thursday, January 17, 2013 9:49 AM
To: r-help@r-project.org
S
I also tried fitting a spline to the resulting survival curve and the result
was horrible.
maybe spline won't work or knots need special handling.
overall, I must have the final point of the smooth survival to be same as the
final point of the raw Cox survival and no flat days, the drops sho
Hello users,
I would like to obtain a survival curve from a Cox model that is smooth and
does not have zero differences due to no events for those particular days.
I have:
> sum((diff(surv))==0)
[1] 18
So you can see 18 days where the survival curve did not drop due to no events.
Is there a wa
4 matches
Mail list logo
