colonexample {YPmodelPhreg}

An example from Chemotherapy for Stage B/C colon cancer

Description

The example colonexample in this package was created using data from one of the first successful trials of adjuvant chemotherapy for colon cancer. The original data set is available from colon in the survival library. The data set colonexample here uses only records with etype = 2 and rx = 1 or 3, and it includes three variables: extent, surg, and node4.

Usage

data("colonexample")

Format

A data frame with 619 observations on the following 6 variables.

time

time until event or censoring (in years)

event

censoring status (1 = event, 0 = censored)

group

group indicator (1 = Lev(amisole)+5-FU), 0 = Obs(ervation))

X1

a binary covariate for extent (1 = serosa or contiguous structures, 0 = submucosa or muscle)

X2

a binary covariate for surg (1=long, 0=short)

X3

a binary covariate for node4 (1 = more than 4 positive lymph nodes, 0 = otherwise)

See Also

ypreg

Examples

library(YPmodelPhreg)
data(colonexample)
head(colonexample)