Fig. 2From: Reduced airway levels of fatty-acid binding protein 4 in COPD: relationship with airway infection and disease severityAssociation of airway FABP4 levels and disease severity. A BALF and (B) Sputum FABP4 levels and GOLD stages classified in mild (GOLD A), moderate (GOLD B), severe (GOLD C) and very severe (GOLD D). P-values were obtained by Mann-Whitney test. *p-value < 0.05 and **p-value < 0.01. Data is represented as median with interquartile rangeBack to article page