Chronic Granulotamous Disease data
cgd.RdData 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.
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.