BODE Index Calculator for COPD
Calculate the original Celli 2004 BODE Index for clinically stable, established COPD from BMI, post-bronchodilator FEV₁ % predicted, mMRC dyspnea, and 6-minute walk distance.
Content updated: View sources
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Formula and medical content are based on the references listed on this page. See sources, About, and Sources and Review Process.
About
This BODE Index Calculator reproduces the original Celli 2004 score for established COPD assessed in a clinically stable setting. BODE stands for body mass index, airflow obstruction, dyspnea, and exercise capacity. [1]
It requires BMI, post-bronchodilator FEV₁ as percent of predicted, the full mMRC 0–4 dyspnea grade, and a valid recorded 6-minute walk distance. It does not diagnose COPD, estimate an individual life expectancy, or replace the source measurement protocols.
Formula
Interpretation
| Component | 0 points | 1 point | 2 points | 3 points |
|---|---|---|---|---|
| BMI, kg/m² | >21 | ≤21 | — | — |
| Post-BD FEV₁, % predicted | ≥65 | 50 to <65 | 36 to <50 | <36 |
| mMRC grade | 0–1 | 2 | 3 | 4 |
| 6MWD, m | ≥350 | 250–349 | 150–249 | 0–149 |
The original quartiles are 0–2 (Quartile 1), 3–4 (Quartile 2), 5–6 (Quartile 3), and 7–10 (Quartile 4). These are source quartiles, not “mild,” “moderate,” “severe,” or patient-specific probability labels. [1]
Current guideline limitation
NICE NG115 says not to use a multidimensional index such as BODE to assess prognosis in people with stable COPD. It recommends considering multiple individual prognostic factors instead. BODE remains a historically validated index, but this page does not describe it as the current routine prognostic standard. [1, 4]
Historical cohort context, not an individual survival estimate
The original study evaluated 207 people during model development and prospectively validated the index in 625. In the validation cohort, 162 died; each one-point increase was associated with an all-cause-death hazard ratio of 1.34 (95% CI 1.26–1.42), and the C statistic was 0.74 for BODE versus 0.65 for FEV₁ alone. These are study-level results, not personal probabilities. [1]
A score of 8 is 8/10 and belongs to original Quartile 4 (scores 7–10). That quartile had 80% mortality at 52 months in the original validation cohort. QuickMedCalc does not convert this historical cohort observation—or secondary websites’ approximate quartile survival figures—into “your survival,” life expectancy, or a large survival-percentage result. [1]
Why transplant sources still mention BODE
GOLD 2026 and ISHLT 2021 still include BODE among multiple factors considered in selected advanced-COPD lung-transplant pathways. Scores 5–6 appear in referral context and scores 7–10 in listing context alongside disease progression, FEV₁, exacerbations, gas exchange, pulmonary hypertension, treatment status, quality of life, and other factors. A BODE score alone does not trigger referral or listing here. [5, 6]
ISHLT also describes imperfect calibration: in 4,377 OPTN/UNOS COPD transplant candidates, Quartile 4 median survival was 59 months versus 37 months in the original BODE cohort, and the original model overestimated mortality in this selected population. This is why transplant context cannot be reduced to one automated BODE action. [6]
Original BODE versus modified models
Modified or updated BODE, mBODE, e-BODE, BODEx, i-BODE, and ADO are distinct research models or variants that change or add inputs. They are not interchangeable with original Celli 2004 BODE and are not calculated on this page. [7]
References
- Celli BR, Cote CG, Marin JM, et al. The Body-Mass Index, Airflow Obstruction, Dyspnea, and Exercise Capacity Index in Chronic Obstructive Pulmonary Disease. N Engl J Med. 2004;350(10):1005–1012. PMID 14999112. DOI 10.1056/NEJMoa021322.
- ATS Committee on Proficiency Standards for Clinical Pulmonary Function Laboratories. ATS statement: guidelines for the six-minute walk test. Am J Respir Crit Care Med. 2002;166(1):111–117. PMID 12091180. DOI 10.1164/ajrccm.166.1.at1102.
- Holland AE, Spruit MA, Troosters T, et al. An official European Respiratory Society/American Thoracic Society technical standard: field walking tests in chronic respiratory disease. Eur Respir J. 2014;44(6):1428–1446. PMID 25359355. DOI 10.1183/09031936.00150314.
- National Institute for Health and Care Excellence. Chronic obstructive pulmonary disease in over 16s: diagnosis and management (NG115). Recommendation 1.1.24: assessing severity and using prognostic factors. Published 2018; last updated 2019.
- Global Initiative for Chronic Obstructive Lung Disease. Global Strategy for Prevention, Diagnosis and Management of COPD: 2026 Report. Lung-transplantation section.
- Leard LE, Holm AM, Valapour M, et al. Consensus document for the selection of lung transplant candidates: An update from the International Society for Heart and Lung Transplantation. J Heart Lung Transplant. 2021;40(11):1349–1379. PMID 34419372. PMCID PMC8979471. DOI 10.1016/j.healun.2021.07.005.
- 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. PMID 19716962. DOI 10.1016/S0140-6736(09)61301-5.
FAQ
The original BODE Index is a 0–10 multidimensional score developed in COPD. BODE stands for body mass index, airflow obstruction, dyspnea, and exercise capacity. This calculator reproduces the Celli 2004 model rather than diagnosing COPD or creating an individual prognosis.
Sources: [1]
The four component points sum to 0–10. Original Celli quartiles are 0–2, 3–4, 5–6, and 7–10. They are source quartiles, not QuickMedCalc severity labels or individual survival probabilities.
Sources: [1]
A score of 8 is 8/10 and falls in original Celli Quartile 4, which spans scores 7–10. In the original validation cohort that quartile had 80% mortality at 52 months, but this is a historical cohort observation—not a statement that an individual has 80% mortality or a specific life expectancy.
Sources: [1]
This implementation is restricted to established COPD assessed in a clinically stable setting. It does not score an acute exacerbation, a currently unstable state, or uncertain context, and it does not diagnose COPD or replace acute assessment.
Sources: [1]
No. NICE NG115 states not to use a multidimensional index such as BODE to assess prognosis in people with stable COPD and instead lists multiple individual prognostic factors to consider. This calculator preserves the historical model without presenting it as a current routine prognostic standard.
No. GOLD 2026 and ISHLT 2021 mention BODE within selected advanced-COPD transplant contexts, but alongside disease progression, FEV1, exacerbations, gas exchange, pulmonary hypertension, treatment status, quality of life, and other factors. The score alone does not trigger referral or listing in this calculator.
No. Modified and updated BODE variants, e-BODE, BODEx, i-BODE, and ADO change or add model inputs and are not interchangeable with the original Celli 2004 score. This page calculates only the original model and provides no variant toggle.
Sources: [7]
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Disclaimer
Educational and informational reference only. Not intended to replace professional medical advice, diagnosis, treatment, or independent verification.