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The BODE index, a simple multidimensional grading system, is better than the FEV1 at predicting the risk of death from any cause and from respiratory causes among patients with COPD (1)
The study authors evaluated 207 COPD patients and found that four factors predicted the risk of death in this cohort: the body-mass index (B), the degree of airflow obstruction (O) and dyspnea (D), and exercise capacity (E), measured by the six-minute-walk test (1)
0 point | 1 point | 2 points | 3 points | |
FEV1 (% predicted) | >= 65 | 50-64 | 36-49 | <= 35 |
6-Minute Walk Test (meters) | >=350 | 250-349 | 150-249 | <149 |
MMRC Dyspnea Scale | 0-1 | 2 | 3 | 4 |
Body Mass Index * | >21 | <=21 |
* The Body Mass Index values were correlated as 0 or 1 because of the inflection point in the inverse relationship between survival and a body mass index of 21, ie a Body Mass Index of >21 was associated with greater chance of survival than a BMI of <=21
Reference:
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