ADO Index (Age, Dyspnea, Obstruction; COPD)
ADO index (Puhan 2009): a primary-care COPD mortality index needing no walk test — age, mMRC dyspnea grade, and FEV₁ % predicted give a 0–10 score predicting 3-year all-cause mortality.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Age
- 72 years
- mMRC dyspnea grade
- 3 — stops after ~100 m / few minutes (+2)
- FEV₁
- 30
Result: ADO 7/10 — highest-risk quartile (7–10); higher scores predict higher 3-year all-cause mortality.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Risk
- A higher score predicts higher 3-year all-cause mortality, rising across the quartiles 0–2, 3–4, 5–6, 7–10. A primary-care-friendly BODE alternative needing no 6-minute walk test.
What you enter
- Age
- mMRC dyspnea grade
- FEV₁ (% predicted)
How this is calculated
- Points
- Age 40–49 → 0 up to ≥ 90 → 5; mMRC 0–1 → 0, 2 → 1, 3 → 2, 4 → 3; FEV₁ % predicted ≥ 65 → 0, 36–64 → 1, ≤ 35 → 2. Total 0–10.
Puhan MA, Garcia-Aymerich J, Frey M, et al. Expansion of the prognostic assessment of patients with chronic obstructive pulmonary disease: the updated BODE index and the ADO index. Lancet. 2009;374(9691):704-711. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.