breast {SMPracticals}R Documentation

Breast Cancer Data

Description

Initial and follow-up status for 37 breast cancer patients treated for spinal metastases. The status is able to walk unaided (1), unable to walk unaided (2), dead (3). The follow-up times are 0, 3, 6, 12, 24, and 60 months after treatment began.

Usage

data(breast)

Format

A data frame with 37 observations on the following 8 variables.

j
Case number
init
Initial status
x0
Status immediately after treatment started
x1
Status after 3 months
x2
Status after 6 months
x3
Status after 12 months
x4
Status after 24 months
x5
Status after 60 months

Details

Woman 24 was alive after 6 months but her ability to walk was not recorded (she was in state 1 or 2).

NA indicates that a woman has previously died, or that her status is unknown.

Source

de Stavola, B. L. (1988) Testing departures from time homogeneity in multistate Markov processes. Applied Statistics, 37, 242–250.

References

Davison, A. C. (2003) Statistical Models. Cambridge University Press. Page 227.

Examples

data(breast)

[Package SMPracticals version 1.3 Index]