cgd: Chronic Granulotamous Disease data
In survival: Survival Analysis

cgd	R Documentation

Chronic Granulotamous Disease data

Description

Data are from a placebo controlled trial of gamma interferon in chronic granulotomous disease (CGD). Contains the data on time to serious infections observed through end of study for each patient.

Usage

cgd

Format

id: subject identification number
center: enrolling center
random: date of randomization
treatment: placebo or gamma interferon
sex: sex
age: age in years, at study entry
height: height in cm at study entry
weight: weight in kg at study entry
inherit: pattern of inheritance
steroids: use of steroids at study entry,1=yes
propylac: use of prophylactic antibiotics at study entry
hos.cat: a categorization of the centers into 4 groups
tstart, tstop: start and end of each time interval
status: 1=the interval ends with an infection
enum: observation number within subject

Details

The cgd0 data set is in the form found in the references, with one line per patient and no recoding of the variables. The cgd data set (documented above) has been cast into (start, stop] format with one line per event, and covariates such as center recoded as factors so as to create meaningful labels.

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::cdg or data(cgd, package="survival") can be used.