Duke Treadmill Score Calculator

Your details

Total minutes on the treadmill using the standard Bruce protocol (or equivalent METs protocol). The typical stress test lasts 6-12 minutes.
min
The largest net ST-segment change (elevation or depression) in any lead except aVR, measured in millimetres during or after exercise.
mm
Score 0 for no chest pain, 1 if angina occurred but you were able to continue, 2 if angina forced the test to stop.
Duke Treadmill ScoreLow risk
9

Score = exercise time - (5 x ST deviation) - (4 x angina index)

Risk categoryLow
4-year survival1%
Annual mortality estimate0%
9 pts
High risk<-10Intermediate risk-10-5Low risk5+

Duke Treadmill Score: 9.0 - Low risk.

  • A score of 5 or above places you in the low-risk group, with an observed 4-year survival of 99% and an average annual mortality of about 0.25% in the Duke outpatient cohort.
  • Low-risk patients can generally be managed medically without urgent referral for coronary angiography.
  • Exercise capacity above 10 METs (roughly 9 minutes of the Bruce protocol) is itself a strong independent predictor of good outcome.
  • The Duke Treadmill Score applies to patients without baseline ECG abnormalities (such as left bundle branch block or pre-excitation) that make ST changes uninterpretable.

Next stepContinue optimising cardiovascular risk factors; follow up as recommended by your clinical team.

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