Did you try the survival package?
On Wed, 07-Mar-2012 at 10:50AM -0500, Jason Connor wrote: |> I thought this would be trivial, but I can't find a package or function |> that does this. |> |> I'm hoping someone can guide me to one. |> |> Imagine a simple case with two survival curves (e.g. treatment & control). |> |> I just want to calculate the difference in KM estimates at a specific time |> point (e.g. 1 year) plus the estimate's 95% CI. The former is |> straightforward, but the estimates not so much. |> |> I know methods exist such as Parzen, Wei, and Ying, but was surprised not |> to find a package that included this. |> |> Before I code it up, I thought I'd ask if I was just missing it somewhere. |> |> Thank you |> Jason |> |> [[alternative HTML version deleted]] |> |> ______________________________________________ |> R-help@r-project.org mailing list |> https://stat.ethz.ch/mailman/listinfo/r-help |> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html |> and provide commented, minimal, self-contained, reproducible code. -- ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. ___ Patrick Connolly {~._.~} Great minds discuss ideas _( Y )_ Average minds discuss events (:_~*~_:) Small minds discuss people (_)-(_) ..... Eleanor Roosevelt ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
