Survival times of patients with multiple myeloma

Survival times of 3882 subjects with multiple myeloma, seen at Mayo Clinic from 1947–1996.

Usage

myeloma
data("cancer", package="survival")

Format

A data frame with 3882 observations on the following 5 variables.

id

subject identifier

year

year of entry into the study

entry

time from diagnosis of MM until entry (days)

futime

follow up time (days)

death

status at last follow-up: 0 = alive, 1 = death

Details

Subjects who were diagnosed at Mayo will have entry =0, those who were diagnosed elsewhere and later referred will have positive values.

References

R. Kyle, Long term survival in multiple myeloma. New Eng J Medicine, 1997

Examples

# Incorrect survival curve, which ignores left truncation
fit1 <- survfit(Surv(futime, death) ~ 1, myeloma)
# Correct curve
fit2 <- survfit(Surv(entry, futime, death) ~1, myeloma)