Followup of 312 randomised patients with primary biliary cirrhosis, a rare autoimmune liver disease, at Mayo Clinic.
data(pbc3)A data frame with 1390 rows and 15 variables
id: patients identifier; in total there are 312 patients
years: number of years between registration and the earlier of death, transplantion, or study analysis time
status: a factor with levels alive, transplanted and dead
drug: a factor with levels placebo and D-penicil
age: at registration in years
sex: a factor with levels male and female
year: number of years between enrollment and this visit date, remaining values on the line of data refer to this visit
ascites: a factor with levels No and Yes
hepatomegaly: a factor with levels No and Yes
spiders: a factor with levels No and Yes
edema: a factor with levels No edema (i.e., no edema and no diuretic therapy for edema), edema no diuretics (i.e., edema present without diuretics, or edema resolved by diuretics), and edema despite diuretics (i.e., edema despite diuretic therapy)
serBilir: serum bilirubin in mg/dl
albumin: albumin in gm/dl
platelets: platelets per cubic ml / 1000
prothrombin: prothrombin time in seconds