collett (version 0.1.2)

bcancer: 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. 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")