Randomized trial of UDCA in PBC

A randomized trial of ursodeoxycholic acid in patients with primary biliary cirhossis, conducted at the Mayo Clinic from 1988 to 1992.

id number
rx : 0=placebo 1=UDCA
date of entry to the study
date of last complete follow-up
histologic stage : 0= stage 1/2 at entry 1= stage 3/4
bilirubin value at entry to the study
Mayo risk score at entry to the study
date of death
date of liver transplant
date of voluntary withdrawal
date of histologic progression
date of appearance of esophogeal varices
date of ascites
date of encephalopathy
date of doubling of bilirubin
date of "worsening of symptom score by 2"

A date is missing if a given complication did not arise. It is possible for death, transplant, or withdrawal to occur after the date of the last complete follow-up (they can be ascertained without a patient visit).
data
sample SAS code to read the data

Reference:Lindor, et al., Gastroenterology, 1994, pages= 1284--1290