valve: Survival following aortic valve replacement

In collett: Datasets from "Modelling Survival Data in Medical Research" by Collett

Survival following aortic valve replacement

Description

Patients following an aortic valve replacement are measured for left ventricular mass index (LVMI).

Usage

valve

Format

A data frame with 988 rows and 11 variables:

id

integer patient id

futime

double total follow-up time from date of surgery (years)

status

integer event indicator (0=censored, 1=death)

time

double time of LVMI measurement after surgery (years)

lvmi

double standardised LVMI

age

integer age of patient in years

sex

integer sex of patient (0=male, 1=female)

redo

integer previous cardiac surgery (0=no, 1=yes)

emerg

integer operative urgency (0=elective, 1=urgent or emergency)

dm

integer preoperative diabetes mellitus (0=no, 1=yes)

type

integer type of valve (1=human tissue, 2=porcine tissue)

Details

See Collett (2023)

collett documentation built on April 3, 2025, 5:53 p.m.