Table 1.

Clinico-pathological features of patients (n=72)

Items	Characteristics	Lung cancer patients (N=72)	Healthy individuals (N=60)
Gender
	Male	46(63.9%)	38(63.3%)
	Female	26(36.1%)	22(36.7%)
Ages
	<60	31(43.06%)	36(60%)
	≥60	41(56.94%)	24(40%)
Smoking
	Yes	28(38.9%)	19 (31.7%)
	No	44(61.1%)	41(68.3%)
Classification of pathology
	LAC	33(45.83%)
	LSCC	39(54.17%)
Differentiation degree
	Poorly differentiated	24(33.3%)
	Moderately differentiated	19(26.4%)
	Well-differentiated	29(40.3%)
Clinical staging
	IIA - IIIA	35(48.6%)
	IIIB - IV	37(51.4%)
Lymphatic metastasis
	N0 - N1	26(63.9%)
	N2 - N3	46(36.1%)

NSCLC, non-small cell lung cancer; LAC, lung adenocarcinoma; LSCC, lung squamous cell carcinoma; N, the grade of lymphatic invasion