Figure 5From: YKL-40 is correlated with FEV1 and the asthma control test (ACT) in asthmatic patients: influence of treatmentCorrelation of changes (Δ) in three parameters between the two visits. Statistically significant correlations were observed (a) between ΔYKL-40 and ΔFEV1; (b) between ΔYKL-40 and ΔACT. Note: FEV1, forced expiratory volume in one second; ACT, asthma control test.Back to article page