S-phase fraction of tumor cells in breast cancer patients.
Usage
data("sphase")
Format
This data frame contains the following columns:
SPF
S-phase fraction
RFS
recurrence free survival
event
censoring indicator: FALSE means censored,
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.
Analytical and Quantitative Cytology and Histology7(6),
406–412.
References
Torsten Hothorn & Berthold Lausen (2003).
On the Exact Distribution of Maximally Selected Rank Statistics.
Computational Statistics & Data Analysis43(2),
121–137.