This data is from a Mayo Clinic trial in primary biliary cirrhosis (PBC) of the liver conducted between 1974 and 1984. A total of 312 PBC patients, referred to Mayo Clinic during that ten-year interval, met eligibility criteria and participated in the randomized placebo controlled trial of the drug D-penicillamine.
Time: Time on study (years)Status: Event indicator (0=censored, 1=patient required a liver transplant, 2=patient died)Group: Treatment group (Penicillamine, Placebo)This data set is a simplified version of the pbc data set from the survival package in R. The original data is from:
Dickson ER, Fleming TR, Wiesner RH, Baldus WP, Fleming CR, Ludwig J, and McCall JT (1985). Trial of penicillamine in advanced primary biliary cirrhosis. New England Journal of Medicine, 312: 1011-1015.