Lung: VA lung cancer data set
Description
Data from a randomised trial of two treatment regimens for
lung cancer. This is a standard survival analysis data set from the
classic textbook by Kalbfleisch and Prentice.
- X: A design matrix with 137 observations (rows) and 9
predictor variables (columns). The columns are:
- trt: Treatment indicator (1=control group, 2=treatment
group)
- karno: Karnofsky performance score (0=bad, 100=good)
- diagtime: Time from diagnosis to randomization (months)
- age: Age (years)
- prior: Prior therapy (0=no, 1=yes)
- squamous: Indicator for whether the cancer type is squamous
cell carcinoma (0=no, 1=yes)
- small: Indicator for whether the cancer type is small cell
lung cancer (0=no, 1=yes)
- adeno: Indicator for whether the cancer type is
adenocarcinoma (0=no, 1=yes)
- large: Indicator for whether the cancer type is large cell
carcinoma (0=no, 1=yes)
- y: A two column matrix (
Surv
object) containing the
follow-up time (in days) and an indicator variable for whether the
patient died while on the study or not.
format
A list containing the design matrix X
and response matrix
y
source
http://CRAN.R-project.org/package=survivalReferences
- Kalbfleisch D and Prentice RL (1980),The Statistical
Analysis of Failure Time Data. Wiley, New York.