Figure 5From: Similar matrix alterations in alveolar and small airway walls of COPD patients Elastin to collagen-hyaluronan index correlates with lung function parameters. Correlation in GOLD II and GOLD IV patients between alveolar elastin to collagen-hyaluronan index and FEV1 (A), FEV1/FVC (B) and between small airway elastin to collagen-hyaluronan index and FEV1 (C), FEV1/FVC (D). Data were analysed using Pearson correlation.Back to article page