LongCART (version 3.2)

GBSG2: German Breast Cancer Study Group 2 (source: TH.data package)

Description

A data frame containing the observations from the GBSG2 study.

Usage

data(GBSG2)

Format

A data frame with 686 observations on the following 10 variables.

horTh

hormonal therapy, a factor with levels no yes

age

age in years

menostat

menopausal status, a factor with levels Pre Post

tsize

tumor size (in mm)

tgrade

an ordered factor with levels I < II < III

pnodes

number of positive nodes

progrec

progesterone receptor (in fmol).

estrec

estrogen receptor (in fmol).

time

recurrence free survival time (in days).

cens

censoring indicator (0- censored, 1- event).

References

Schumacher M, Bastert G, Bojar H, Huebner K, Olschewski M, Sauerbrei W, Schmoor C, Beyerle C, Neumann RL, Rauschecker HF. Randomized 2 x 2 trial evaluating hormonal treatment and the duration of chemotherapy in node-positive breast cancer patients. German Breast Cancer Study Group. Journal of Clinical Oncology. 1994 Oct;12(10):2086-93.

Examples

# NOT RUN {
data(GBSG2)
# }