Figure 2From: Alterations of serum biomarkers associated with lung ventilation function impairment in coal Workers: A cross-sectional study Correlations of FEV 1 and Serum Levels of IL-18R in the Coal Workers. Scatter plot showed that decreased serum IL-18R levels in the CWP subjects correlated with decreased FEV1 (r = 0.570, p < 0.0005) in patients with CWP. Serum levels of IL-18R showed an inverse trend association with FEV1 in asymptomatic miners and group 0+ miners.Back to article page