cardiacsurgery {spcadjust}

Cardiac surgery data

Description

A dataset describing the results of cardiac surgery. The data give information about the date of surgery, surgeon, Parsonnet score and outcome up to 90 days after surgery.

Usage

data(cardiacsurgery)

Format

A data frame with 5595 rows and 5 variables:

date:	date of the operation in days since the beginning of study
time:	number of days between surgery and the earlier of death and 90 days
status:	status at endpoint, 0/1 for censored/dead
Parsonnet:	Parsonnet score of the patient
surgeon:	surgeon performing the operation, numbered from 1 to 7

Source

Based on the data described in Steiner et al (2000). A subset of the data has been selected, some noise has been introduced and the follow-up was censored at 90 days.

References

Steiner SH, Cook RJ, Farewell VT, Treasure T (2000). Monitoring surgical performance using risk-adjusted cumulative sum charts. Biostat 1(4) 441-452.