Data from the Mayo Clinic trial in primary biliary cirrhosis (PBC) of the liver conducted between 1974 and 1984. A total of 424 PBC patients, referred to Mayo Clinic during that ten-year interval, met eligibility criteria for the randomized placebo controlled trial of the drug D-penicillamine. The first 312 cases in the data set participated in the randomized trial and contain largely complete data.
Flemming and Harrington, 1991, Appendix D.1.
Flemming T.R and Harrington D.P., (1991) Counting Processes and Survival Analysis. New York: Wiley.