Table 4.

Univariate analyses of the prognostic factors for the overall survival of lung cancer patients.

Groups		Overall survival rates (%)					P value (Log-rank)
		Years
		1	2	3	4	5
Age <65 years	(n=459)	84	74	67	63	61
Age ≧65 years	(n=549)	85	75	67	62	57	0.410
Sex Male	(n=721)	82	72	63	57	53
Sex Female	(n=281)	91	82	77	75	73	0.000*
Never smokers	(n=252)	93	82	75	72	70
Smokers	(n=756)	81	72	65	59	55	0.000*
Non-FHLC	(n=889)	84	74	67	61	58
FHLC	(n=119)	88	81	71	69	66	0.098
Asymptomatic	(n=674)	91	84	78	72	69
Symptomatic	(n=334)	70	56	46	42	39	0.000*
Preoperative LC diagnosis	(n=876)	84	74	66	61	58
Postoperative LC diagnosis	(n=132)	86	79	73	71	64	0.229
Pneumonectomy	(n=97)	52	44	38	34	31
Others	(n=911)	88	78	70	65	62	0.000*
Pathological stage I, II	(n=697)	92	86	80	75	71
III, IV	(n=311)	65	48	37	31	30	0.000*
Adenocarcinoma	(n=569)	89	81	74	68	64
Others	(n=439)	78	66	59	55	52	0.000*

FHLC, family history of lung cancer; LC, lung cancer; *, statistically significant.