Research Article
Outcomes of COPD Exacerbations Treated with Corticosteroids, Antibiotics, or Both
Table 4
Components of symptom index*.
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*Copyright #TX-7-170-236, 2004. †Dyspnea graded from 1–10 and multiplied by 0.1. ‡Purulent sputum defined as yellow, green or brown colored sputum. §Measured peak expiratory flow rate divided by predicted. |