| Duration of Exercise (min) | |
| ST Wave Deviation (mm) | |
| Treadmill angina index | No angina Non-limiting angina Test stopped due to angina |
Duke score is calculated as follows:
Duke Score = Time in minutes - (5 x ST wave deviation in mm) - (4 x Treadmill angina index)
Treadmill angina index is
0 - No angina
1 - Non-limiting angina
2 - Test stopped due to angina