2.

151例患者总生存的单因素分析

Univariate analysis of overall survival (OS) of 151 patients

Factor		OS/month	95%CI	χ2	P
#: Have one case lost in this factor analysis. *: Have five cases lost in this factor analysis. **: Have nine cases lost in this factor analysis. ##: Have nine cases lost in this factor analysis.
Gender				0.487	0.485
	Male	36.1	19.16-53.04
	Female	42.7	28.38-57.08
Age（yr）				1.847	0.174
	< 60	44.0	29.20-58.87
	≥60	31.6	18.72-44.48
Smoke				0.751	0.386
	No	40.7	28.93-52.41
	Yes	31.6	14.68-48.52
History of tumor
	No	36.1	24.01-48.19
	Yes	65.9	0.00-135.42
Family history of tumor				0.134	0.714
	No	38.9	21.77-56.09
	Yes	44.0	21.95-66.11
Performance status				2.639	0.104
	0	44.0	27.48-60.58
	1	24.7	22.00-27.40
Stage Ⅲa				0.010	0.922
	T4N0/T3-4N1	48.7	12.62-84.72
	T1-3N2	38.9	26.74-51.12
Histology				3.651	0.056
	Squamous	31.6	21.73-41.47
	Non-squamous	44.0	25.81-62.25
Differentiation				4.587	0.205
	Poor	31.6	17.99-45.21
	Moderate	30.3	13.47-47.19
	High	58.4	25.96-90.90
	Unknown	-	-
Adjuvant chemotherapy				10.920	0.001
	No	23.0	19.15-26.91
	Yes	44.0	31.60-56.46
Adjuvant radiotherapy				0.747	0.387
	No	36.1	22.37-49.83
	Yes	38.9	20.85-57.01
Style of surgery#				2.213	0.137
	Lobectomy	40.7	24.87-56.47
	Pneumonectomy	22.1	12.44-31.82
Maximum diameter of tumor*				2.887	0.089
	< 4 cm	42.7	22.56-62.90
	≥4 cm	31.6	10.65-52.55
Number of involved mediastinal lymph nodes**				1.428	0.232
	< 3	42.7	21.78-63.68
	≥3	33.8	11.38-56.28
Positive subcarinal lymph node##				0.400	0.527
	No	44.0	18.63-69.43
	Yes	33.8	22.32-45.34