Revision 6b9cee07bdce93e338e4b25e3c60aa19abbbc50e authored by Torsten Hothorn on 31 March 2009, 00:00:00 UTC, committed by Gabor Csardi on 31 March 2009, 00:00:00 UTC
1 parent 59aef90
sphase.Rd
\name{sphase}
\alias{sphase}
\docType{data}
\title{ S-phase Fraction of Tumor Cells }
\usage{data("sphase")}
\description{
S-phase fraction of tumor cells in breast cancer patients.
}
\format{
This data frame contains the following columns:
\describe{
\item{SPF}{S-phase fraction}
\item{RFS}{recurrence free survival}
\item{event}{censoring indicator: \code{FALSE} means
censored, \code{TRUE} is an event.}
}
}
\details{
The data have been used to address the question whether a simple cutpoint
in S-phase fraction can be used to discriminate between patients with
good and bad prognosis (for example in Hothorn & Lausen, 2003).
}
\source{
J. Pfisterer, F. Kommoss, W. Sauerbrei, D. Menzel, M. Kiechle, E. Giese,
M. Hilgarth \& A. Pfleiderer (1995). DNA flow cytometry in node positive
breast cancer: Prognostic value and correlation to morphological and
clinical factors. \emph{Analytical and Quantitative Cytology and Histology}
\bold{7}(6), 406--412.
}
\references{
Torsten Hothorn & Berthold Lausen (2003).
On the exact distribution of maximally selected rank
statistics. \emph{Computational Statistics \& Data Analysis}
\bold{43}, 121--137.
}
\examples{
maxstat_test(Surv(RFS, event) ~ SPF, data = sphase)
### reproduce the test statistic reported in Hothorn & Lausen (2003)
maxstat_test(Surv(RFS, event) ~ SPF, data = sphase,
ytrafo = function(data) trafo(data, surv_trafo = function(x)
logrank_trafo(x, ties.method = "HL")))
}
\keyword{datasets}
Computing file changes ...