Table 2. α-enolase expression in pathological tissue samples.

Group			Result			χ2	p
		n	Positive	Negative	Positive, %
Benign disease tissue sample		60	6	54	10.0	24.137	< 0.001
Lung cancer tissue sample		72	36	36	50.0
Pathological type
	Adenocarcinoma	38	20	18	52.6
	Squamous cell carcinoma	24	12	12	50.0
	Other types	10	4	6	40.0
Clinical stage
	I/II	51	30	21	58.8	5.445	0.018
	III/IV	21	6	15	28.6
Age, years
	> 60	50	27	23	54.0	1.047	0.443
	≤ 60	22	9	13	40.9
Gender
	Male	46	21	25	45.7	0.963	0.462
	Female	26	15	11	57.7
Smoking history
	Yes	38	23	15	60.5	3.567	0.098
	No	34	13	21	38.2