pbc                 package:survival                 R Documentation

Mayo Clinic Primary Biliary Cirrhosis Data

Description:

     Followup of 312 randomised and 108 unrandomised patients with
     primary biliary cirrhosis, a rare autoimmune liver disease, at
     Mayo Clinic. Most variables have some missing data, coded as -9.

Usage:

     pbc

Format:


       age:       in years
       alb:       serum albumin
       alkphos:   alkaline phosphotase
       ascites:   presence of ascites
       bili:      serum bilirunbin
       chol:      serum cholesterol
       edema:     presence of edema
       edtrt:     0 no edema, 0.5 untreated or successfully treated
                  1 unsuccessfully treated edema
       hepmeg:    enlarged liver
       time:      survival time
       platelet:  platelet count
       protime:   standardised blood clotting time
       sex:       1=male
       sgot:      liver enzyme (now called AST)
       spiders:   blood vessel malformations in the skin
       stage:     histologic stage of disease (needs biopsy)
       status:    censoring status
       trt:       1/2/-9 for control, treatment, not randomised
       trig:      triglycerides
       copper:    urine copper

Source:

     TR Fleming and DP Harrington (1991), _Counting Processes and
     Survival Analysis_. Wiley, New York. ISBN: 0-471-52218-X.

