Data are from a placebo controlled trial of gamma
interferon in chronic granulotomous disease (CGD). Uses the complete
data on time to first serious infection observed through end of study
for each patient, which includes the initial serious infections observed
through the 7/15/89 interim analysis data cutoff, plus the residual data
on occurence of initial serious infections between the interim analysis
cutoff and the final blinded study visit for each patient. Only one
patient was taken off on the day of his last infection.

datasets

survival

survival analysis: descriptive statistics, two-sample
        tests, parametric accelerated failure models, Cox model.
        Delayed entry (truncation) allowed for all models; interval
        censoring for parametric models. Case-cohort designs.

Terry Therneau

Survival Analysis

cgd function

<tabular>ll</tabular>{
   id:	subject identifiction numbercenter:	enrolling center random:	date of randomization treatment:	placebo or gamma interferon 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}

format

Fleming and Harrington, Counting Processes and Survival Analysis,
  appendix D.2.

cgd: Chronic Granulotomous Disease data

Description

Usage

Arguments

format

source