Survival times of patients with multiple myeloma

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

Usage

myeloma

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.

Note

The usage above assumes that the survival package is attached via library(survival) or via another package that depends on survival, e.g., mstate. If not, then either survival::myeloma can be used or data(cancer, package="survival").

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)