GBSG2: German Breast Cancer Study Group 2
Description
A data frame containing the observations from the GBSG2 study.
Format
This data frame contains the observations of 686 women:
- horTh
- hormonal therapy, a factor at two levels
no and
yes.
- age
- of the patients in years.
- menostat
- menopausal status, a factor at two levels
pre
(premenopausal) and post (postmenopausal).
- tsize
- tumor size
(in mm).
- tgrade
- tumor grade, a ordered factor at 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
M. Schumacher, G. Basert, H. Bojar, K. Huebner, M. Olschewski,
W. Sauerbrei, C. Schmoor, C. Beyerle, R.L.A. Neumann and H.F. Rauschecker
for the German Breast Cancer Study Group (1994), Randomized $2\times2$
trial evaluating hormonal treatment and the duration of chemotherapy in
node-positive breast cancer patients. Journal of Clinical Oncology,
12, 2086--2093.