PBC data
Description
Dataset used in Chapter 6 of Regression Methods in Biostatistics (2nd edition), as distributed on the UCSF companion website. Study design: Placebo-controlled clinical trial cohort in primary biliary cirrhosis (D-penicillamine). Primary article: Dickson and colleagues (1989), Hepatology.
Usage
pbc
Format
A data frame with 312 rows and 23 variables:
- number
- Patient record number/identifier.
- status
- Event status indicator (coded outcome/censoring status).
- rx
- Randomized treatment group.
- sex
- Biological sex indicator.
- asictes
- Presence of Ascites
- hepatom
- Hepatomegaly
- spiders
- Presence of Spiders
- edema
- Presence of Edema
- bilirubin
- Serum Bilirubin in mg/dl
- cholest
- Serum Cholesterol in mg/dl
- albumin
- Albumin in gm/dl
- copper
- Urine Copper in ug/day
- alkphos
- Alkaline Phosphatase in U/liter
- sgot
- SGOT in U/ml
- trigli
- Triglycerides in mg/dl
- platel
- Platelets per cubic ml / 1000
- prothrom
- Prothrombin time in seconds
- histol
- Histologic stage of disease
- age
- Age or age category at baseline (as coded in source data).
- years
- Time to Death (in Years)
- logbili
- Bilirubin (log)
- logalbu
- Albumin (log)
- logprot
- Prothom time (log)