The Role of CD40, CD86, and Glutathione S-Transferase Omega 1 in the Pathogenesis of Chronic Obstructive Pulmonary Disease

Table 2

Measurement results of lung function in different groups.

	Nonsmoking	Smoking but without COPD	GOLD I	GOLD II	GOLD III∼IV
N	9	8	10	8	11
FEV1% (%)	98.32 ± 1.40	96.46 ± 1.69	84.28 ± 2.00^#	57.25 ± 5.65^#▲	35.28 ± 5.06^#▲■
FEV1/FVC (%)	80.06 ± 1.49	79.35 ± 1.97	63.70 ± 3.06^#	52.85 ± 1.32^#▲	41.65 ± 1.86^#▲■

Compared with the nonsmoking group, ; ^#compared with smoking but without the COPD group, ; ▲compared with the GOLD I group, ; ■compared with the GOLD II group, .