GBSG: German Breast Cancer Study Group.

Description Usage Format Source References Examples

Description

A data frame containing the observations from the GBSG study.

Usage

1

Format

This data frame contains the observations of 686 women:

id

patient id 1...686.

htreat

hormonal therapy, a factor at two levels 0 (no) and 1 (yes).

age

age of the patients in years.

menostat

menopausal status, a factor at two levels 1 (premenopausal) and 2 (postmenopausal).

tumsize

tumor size (in mm).

grade

tumor grade.

posnodal

number of positive nodes.

prm

progesterone receptor (in fmol).

esm

estrogen receptor (in fmol).

rfst

rfst recurrence free survival time (in days).

cens

censoring indicator (0 censored, 1 event).

Source

Beyerle, R.L.A. Neumann and H.F. Rauschecker for the German Breast Cancer Study Group (1994). Randomized 2x 2 trial evaluating hormonal treatment and the duration of chemotherapy in nodepositive breast cancer patients. Journal of Clinical Oncology, 12, 2086-2093. W. Sauerbrei and P. Royston (1999). Building multivariable prognostic and diagnostic models: transformation of the predictors by using fractional polynomials. Journal of the Royal Statistics Society Series A, Volume 162(1), 71-94.

References

package(mfp)

Examples

1
2

Example output

Loading required package: survival
Loading required package: splines
'data.frame':	686 obs. of  11 variables:
 $ id      : int  315 550 556 435 559 558 557 514 450 646 ...
 $ htreat  : int  0 1 0 0 0 0 0 1 1 0 ...
 $ age     : int  50 57 44 50 51 62 61 37 62 43 ...
 $ menostat: int  1 2 1 1 1 2 2 1 2 1 ...
 $ tumsize : int  29 60 70 18 50 22 18 20 20 32 ...
 $ grade   : int  1 3 2 3 2 2 3 2 2 2 ...
 $ posnodal: int  2 18 19 1 5 7 4 9 1 1 ...
 $ prm     : int  90 11 28 1 360 76 8 0 100 171 ...
 $ esm     : int  30 13 31 4 57 153 10 0 100 43 ...
 $ rfst    : int  8 15 16 17 17 18 29 42 46 57 ...
 $ cens    : int  0 0 0 0 0 0 0 0 0 0 ...

CoxRidge documentation built on May 29, 2017, 11:47 a.m.