| | Feature | Code | Description | Domain | Data type | Mean | Standard deviation |
| | Age | | — | 29–77 | Real | 54 | 9 | | Sex | | Male, female | 0, 1 | Binary | — | — | | Chest pain type | | Angina, asymptomatic, abnormal | 1, 2, 3, 4 | Nominal | — | — | | Resting blood pressure | | — | 94–200 | Real | 131.344 | 17.862 | | Serum cholesterol in mg/dl | | — | 126–564 | Real | 249.659 | 51.686 | | Fasting blood sugar > 120 mg/dl | | — | 0, 1 | Binary | — | — | | Resting electrocardiographic results | | Norm, abnormal, hyper | 0, 1, 2 | Nominal | — | — | | Maximum heart rate achieved | | — | 71–202 | Real | 149.678 | 23.1666 | | Exercise-induced angina | | — | 0, 1 | Binary | — | — | | Old peak = ST depression induced by exercise relative to rest | | — | 0–6.2 | Real | 1.05 | 1.145 | | Slope of the peak exercise ST segment | | Up, flat, down | 1, 2, 3 | Ordered | — | — | | Number of major vessels (0–3) colored by fluoroscopy | | — | 0, 1, 2, 3 | Real | — | — | | Thal | | Normal, fixed defect, reversible defect | 3, 6, 7 | Nominal | — | — |
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