Fig. 1From: Relationship between airway inflammation, small airway dysfunction, and frequency of acute exacerbations in patients with chronic obstructive pulmonary diseaseThis figure demonstrates a statistically significant negative correlation between MLD (E/I) ratio and MEF-25–75 (p = 0.005) and a negative correlation between BAL Neutrophil % and MEF 25–75 but without statistical significanceBack to article page