Table 5.

Correlation between inflammatory cytokine levels and pulmonary function indicators.

	FEV1		FEV1%pred		FEV1%FVC
	r	P	r	P	r	P
WBC	−0.792	<0.001	−0.701	<0.001	−0.732	<0.001
CRP	−0.873	<0.001	−0.705	<0.001	−0.766	<0.001
IL-6	−0.902	<0.001	−0.753	<0.001	−0.821	<0.001
IL-8	−0.807	<0.001	−0.701	<0.001	−0.747	<0.001
TNF-α	−0.871	<0.001	−0.717	<0.001	−0.762	<0.001

FEV1, forced expiratory volume in 1 s; FEV1%pred, FEV1 % predicted; FEV1%FVC, FEV1/forced vital capacity; WBC, white blood cell; CRP, C-reactive protein; IL, interleukin; TNF, tumor necrosis factor.