On Jul 13, 2011, at 1:10 PM, Tom La Bone wrote:
I want to assign the value of rmean from a survfit object to a
variable so
that it can be used in subsequent calculations, which is also what I
interpreted the original poster to want. I did not understand Dr.
Therneau's
answer to the original poster, so I figured I would provide a simple
example
and see if someone could spoon feed me on how to do this. Dr.
Winsemius
seemed to have gotten an answer, but I have not been able to
reproduce it.
It appears to me that summary(fit) and summary.survfit(fit), where
fit is an
object created by survfit, are the same thing (the example on the
summary.survfit help page reinforces this idea). I have played with
the
rmean=getOption('survfit.rmean') option in summary but I can't seem
to get
anywhere.
No. That is only a flag which the summary.survfit function uses to
determine whether to produce an rmean estimate. It should be a
character value.
When it exists, the *rmean estimate will be in the summary(fit,)$table
matrix (or vector).
Try this instead:
options(survfit.rmean = "individual")
summary(fit)$table
--
David Winsemius, MD
West Hartford, CT
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