2.

城市、乡镇患者的临床特征

Comparison of clinical characteristics between patients in city and patients in township

Characteristic	Patients in city (n=229)	Patients in township (n=276)	P
Age (yr, Mean±SD)	60.9±10.0	57.3±10.0	< 0.001
Gender			0.575
Male	143 (62.4)	179 (64.9)
Female	86 (37.6)	97 (35.1)
Smoking			< 0.001
Current or ever	94 (41.0)	160 (58.0)
Never	135 (59.0)	116 (42.0)
Pathological stage
Stage Ⅰ	126 (55.0)	121 (43.8)	0.012
Stage Ⅱ	48 (21.0)	86 (31.2)	0.010
Stage Ⅲ	46 (20.1)	62 (22.5)	0.517
Stage Ⅳ or tumors metastasizing to lung	9 (3.9)	7 (2.5)	0.373