| pbc_orsf {aorsf} | R Documentation |
These data are a light modification of the survival::pbc data. The modifications are:
pbc_orsf
A data frame with 276 rows and 20 variables:
case number
number of days between registration and the earlier of death, transplantion, or study analysis in July, 1986
status at endpoint, 0 for censored or transplant, 1 for dead
randomized treatment group: D-penicillmain or placebo
in years
m/f
presence of ascites
presence of hepatomegaly or enlarged liver
blood vessel malformations in the skin
0 no edema, 0.5 untreated or successfully treated, 1 edema despite diuretic therapy
serum bilirubin (mg/dl)
serum cholesterol (mg/dl)
serum albumin (g/dl)
urine copper (ug/day)
alkaline phosphotase (U/liter)
aspartate aminotransferase, once called SGOT (U/ml)
triglycerides (mg/dl)
platelet count
standardized blood clotting time
histologic stage of disease (needs biopsy)
removed rows with missing data
converted status into 0 for censor or transplant, 1 for dead
converted stage into an ordered factor.
converted trt, ascites, hepato, spiders, and edema into factors.
T Therneau and P Grambsch (2000), Modeling Survival Data: Extending the Cox Model, Springer-Verlag, New York. ISBN: 0-387-98784-3.