| Attributes | Description | Range |
| Age | Age in years | Continuous |
| Sex | & (1 = male; 0 = female) | 0, 1 |
| Cp | Value 1: typical angina Value 2: atypical anginal Value 3: non-anginal pain Value 4: asymptotic | 1, 2, 3, 4 |
| trestbps | Resting blood pressure (in mm Hg) | Continuous |
| chol | Serum cholesterol in mg/dl | Continuous |
| fbs | Fasting blood sugar. 120 mg/dl) (1 = true; 0 = false) | 0, 1 |
| restecg | electrocardiography results Value 0: normal Value 1: having ST-T wave abnormality (T wave inversions and/or ST Elevation or depression of > 0.05 mV) Value 2: showing probable or definite left | 0, 1, 2 |
| Thalach | Maximum heart rate achieved | Continuous |
| Exang | Exercise induced angina (1 = yes; 0 = no) | 0, 1 |
| Oldpeak | ST depression induced by exercise relative to rest | Continuous |
| Slope | The slope of the peak exercise ST segment Value 1: up sloping Value 2: flat Value 3: down sloping | 0, 1, 2 |
| Ca | Number of major vessels (0 - 3) Colored by fluoroscopy | Continuous |
| Thal | Normal, fixed defect, reversible defect | 3, 6, 7 |