kg/m²
%
m
How it's calculated
Four components — BMI, airflOw obstruction (FEV1%), Dyspnoea (mMRC), and Exercise capacity (6-minute walk distance) — are each scored and summed for a total of 0-10.
Points by component
| Points | BMI | FEV1 % predicted | mMRC | 6MWD (m) |
|---|---|---|---|---|
| 0 | >21 | ≥65 | 0-1 | ≥350 |
| 1 | ≤21 | 50-64 | 2 | 250-349 |
| 2 | — | 36-49 | 3 | 150-249 |
| 3 | — | ≤35 | 4 | ≤149 |
Clinical use
- Used in COPD to predict mortality risk more accurately than FEV1 alone, by combining body composition, airflow limitation, symptom burden, and exercise capacity.
- Higher BODE scores are associated with increasing mortality risk over subsequent years — useful for counselling patients and planning follow-up intensity.
- The 6-minute walk distance component requires a standardised corridor walk test, ideally performed the same way each time for comparability.
Frequently asked questions
What does BODE stand for?
BMI, airflow Obstruction (FEV1%), Dyspnoea (mMRC scale), and Exercise capacity (6-minute walk distance) — the four components combined into a single COPD prognostic index.
Why is a lower BMI given more points (worse) in BODE?
In COPD, a lower BMI (≤21) is associated with worse prognosis due to disease-related muscle wasting and cachexia, which is why it scores 1 point (higher risk) rather than 0.
Is BODE better than FEV1 alone for predicting COPD outcomes?
Yes — the original validation study found BODE predicted mortality more accurately than FEV1 alone, since it captures symptom burden and functional capacity that spirometry alone misses.
References
- Celli BR, et al. The body-mass index, airflow obstruction, dyspnea, and exercise capacity index in chronic obstructive pulmonary disease. N Engl J Med. 2004;350:1005-1012.