bcancer: Prognosis for women with breast cancer

In collett: Datasets from "Modelling Survival Data in Medical Research" by Collett

Prognosis for women with breast cancer

Description

For female breast cancer patients from Middlesex Hospital. The dataset includes the result of staining using Helix pomatia agglutinin (HPA).

Usage

bcancer

Format

A data frame with 45 rows and 3 variables:

stain

integer for negative staining (=1) or positive staining (=2)

time

integer time in months for survival

status

integer for status at end of follow-up (0=censored, 1=death)

Details

For details about the study design, see Leathem and Brooks (1987).

The dataset is described in Example 1.2 and Table 1.2 (Collett, 2023, pages 6-7).

References

Leathem AJ, Brooks S. Predictive value of lectin binding on breast-cancer recurrence and survival. The Lancet. 1987 May 9;329(8541):1054-6. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1016/S0140-6736(87)90482-X")}

Examples

library(survival)
plot(survfit(Surv(time,status)~stain, data=bcancer), col=1:2, xlab="Survival time (months)",
ylab="Survival")
legend("topright", legend=c("Negative staining","Positive staining"), col=1:2, lty=1,
bty="n")

collett documentation built on April 3, 2025, 5:53 p.m.