Relationship of Serum Levels of IL-17, IL-18, TNF-α, and Lung Function Parameters in Patients with COPD, Asthma-COPD Overlap, and Bronchial Asthma

Table 4

Correlation between the serum concentration of IL-18 and the lung function parameters in patients with COPD, asthma-COPD overlap, and bronchial asthma.

Spirometric indicators	COPD		ACO		BA
	FVC (l)	-0.01	0.9	-0.473	0.008	0.04	0.9
FVC (%)	0.1	0.45	-0.478	0.008	0.05	0.85
FEV1 (l)	0.107	0.5	-0,19	0,314	0.07	0.81
FEV1 (%)	0.131	0.41	-0.38	0.038	-0.03	0.9
FEV1/FVC (%)	-0.055	0.72	0.144	0.44	0.2	0.4
FEF25 (l)	0.104	0.51	-.0174	0.35	0.09	0,7
FEF25 (%)	0.118	0.45	-0.107	0.57	0.09	0.7
FEF50 (l)	0.014	0.92	-0.121	0.52	0.25	0.4
FEF50 (%)	0.094	0.55	0.005	0.98	0.29	0.3
FEF75 (l)	0.052	0.74	-0.012	0.95	0.19	0.5
FEF75 (%)	0.058	0.71	-0.204	0.28	0.08	0.78
IC (%)	0.129	0.41	-0.126	0.51	0.2	0.4

: correlation coefficient; COPD: chronic obstructive pulmonary disease; ACO: asthma-COPD overlap; BA: bronchial asthma.