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

Table 1

Basic information of different groups.

	Nonsmoking	Smoking but without COPD	GOLD I	GOLD II	GOLD III∼IV
N	9	8	10	8	11
Sex (Male/Female)	6/3	6/2	7/3	6/2	8/3
Age (years)	65.89 ± 6.75	67.75 ± 6.04	66.20 ± 7.42	69.25 ± 7.78	70.55 ± 6.80

Note. There is no statistical significance in the comparison between groups.