The liver data used in SAS PROC PHREG documentation examples.

This data set contains information on 418 patients with primary biliary cirrhosis.

Usage

liver

An object of class tbl_df (inherits from tbl, data.frame) with 418 rows and 7 columns.

Time: The follow-up time in years from the time of registration. The event could be liver transplantation, death, or the end of the study, whichever came first
Status: A censoring indicator, where a value of 1 indicating a death event, and 0 indicating a censored observation (the patient survived past the observation time)
Age: The patient's age in years
Albumin: Serum albumin level in g/dl
Bilirubin: Serum bilirubin level in mg/dl
Edema: Edema status, where a value of 0 indicates no edema, 0.5 indicates edema successfully treated with diuretics, and 1 indicates edema despite diuretic therapy
Protime: Prothrombin time in seconds