pbc {survival} | R Documentation |
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.
data(pbc)
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 |
Fleming TR, Harrington DP. "Counting Processes and Survival Analysis" Wiley:New York