1.

Ⅲa期各组患者的临床特征

Clinical characteristics of each group of stage Ⅲa

Characteristic		n	Ratio (%)
Gender
	Male	111	73.5
	Female	40	26.5
Age (yr)
	＜60	66	43.7
	≥60	85	56.3
Smoke
	No	57	37.7
	Yes	94	62.3
History of tumor
	No	139	92.1
	Yes	12	7.9
Family history of tumor
	No	122	80.8
	Yes	29	19.2
Performance status
	0	127	84.1
	1	24	15.9
Stage Ⅲa
	T4N0/T3-4N1	43	28.5
	T1-3N2	108	71.5
Histology
	Squamous	72	47.7
	Non-squamous	79	52.3
Differentiation
	Poor	68	45.0
	Moderate	56	37.1
	High	16	10.6
	Unknown	11	7.3