heart {nonbinROC}R Documentation

Heart damage diagnosis after myocardial infarction

Description

A data frame giving a series of ordinal measurements of the positron emission tomography and magnetic resonance imaging scans for the heart tissues of 241 fictitious patients after myocardial infarctions.

Usage

data(heart)

Format

This data frame contains the following 2 variables:

PET
gold standard for evaluating the most damage part of the heart (1 = normal, 2 = ischemic, 3 = hibernating, and 4 = necrotic)
MRI
amount of scarring in the most damaged part of the heart (0 = normal, 1 = 1-24%, 2 = 25-49%, 3 = 50-74%, 4 = 75-99%, and 5 = 100% scarring)

Source

Obuchowski, N. A. (2005) Estimating and comparing diagnostic tests' accuracy when the gold standard is not binary. Academic Radiology, 12, 1198-1204.


[Package nonbinROC version 1.0.1 Index]