2.

Ia期SCLC患者总生存和肺癌特异性生存的单变量分析

Univariate analysis of overall survival and lung cancer specific survival for Ia SCLC

Variable	Univariate analysis
	Overall survival			Lung cancer specific survival
	χ2	P		χ2	P
ELN: examined lymph node; Sub: sublobar resection; Lob: lobectomy.
Age (yr)	13.961	< 0.001		13.473	< 0.001
60-74/75
Gender	1.762	0.184		0.790	0.374
Male/Female
Race	2.012	0.147		0.935	0.333
White/black/other
Location	2.275	0.321		3.972	0.137
Upper/Middle/Lower
Tumor size (cm)	0.459	0.498		4.824	0.028
≤2/2-3
ELN count	27.637	< 0.001		22.570	< 0.001
None/≥1
Surgical Procedure	42.777	< 0.001		42.934	< 0.001
Lob/Sub/ Non-surgical
Radiation	6.503	0.039		4.578	0.101
No/Yes
Chemotherapy	10.408	0.001		8.856	0.003
No/Yes