On this R-data statistics page, you will find information about the cgd data set which pertains to Chronic Granulotomous Disease data. The cgd data set is found in the survival R package. You can load the cgd data set in R by issuing the following command at the console data("cgd"). This will load the data into a variable called cgd. If R says the cgd data set is not found, you can try installing the package by issuing this command install.packages("survival") and then attempt to reload the data. If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the cgd R data set. The size of this file is about 19,908 bytes.
Chronic Granulotomous Disease data
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.
subject identification number
date of randomization
placebo or gamma interferon
age in years, at study entry
height in cm at study entry
weight in kg at study entry
pattern of inheritance
use of steroids at study entry,1=yes
use of prophylactic antibiotics at study entry
a categorization of the centers into 4 groups
- tstart, tstop
start and end of each time interval
1=the interval ends with an infection
observation number within subject
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 (this one) has been cast into (start, stop] format with one line per event, and covariates such as center recoded as factors to include meaningful labels.
Fleming and Harrington, Counting Processes and Survival Analysis, appendix D.2.
Dataset imported from https://www.r-project.org.