Figure 4From: YKL-40 is correlated with FEV1 and the asthma control test (ACT) in asthmatic patients: influence of treatmentCorrelations of serum YKL-40 levels with (a) FEV 1 and (b) ACT score at visit 2. Note: FEV1, forced expiratory volume in one second; ACT, asthma control test.Back to article page