Duke Treadmill Score (exercise-test prognosis)
Duke treadmill score (Mark 1987): exercise time, ST deviation, and angina index mapped to a risk band and cited 5-year survival.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Exercise time
- 7 min
- Maximal ST-segment deviation
- 1 mm
- Exercise angina index
- 0 — no angina
Result: Duke treadmill score 2: moderate risk, 95% 5-year survival.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Risk / 5-year survival
- Low >= +5 (99%); moderate -10 to +4 (95%); high <= -11 (79%).
What you enter
- Exercise time (Bruce protocol)
- Maximal ST-segment deviation
- Exercise angina index (0 none, 1 non-limiting, 2 limiting)
How this is calculated
- Formula
- DTS = exercise time(min) - (5 x ST deviation mm) - (4 x angina index: 0 none, 1 non-limiting, 2 limiting).
Mark DB, Hlatky MA, Harrell FE Jr, Lee KL, Califf RM, Pryor DB. Exercise treadmill score for predicting prognosis in coronary artery disease. Ann Intern Med. 1987;106(6):793-800. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.
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