Table 1. Patient characteristics and clinicopathological variables and their prognostic value for disease-specific survival in 335 NSCLC patients (univariate analyses; log rank test).

Characteristic	Patients(n)	Patients(%)	Median survival(months)	5-Year survival(%)	P
Age
≤65 years	156	47	83	55	0.34
>65 years	179	53	NR	60
Sex
Female	82	25	190	63	0.20
Male	253	75	83	56
Smoking
Never	15	5	19	43	0.23
Current	215	64	NR	60
Former	105	31	71	54
Performance status
PS 0	197	59	NR	63	0.013
PS 1	120	36	64	52
PS 2	18	5	25	33
Weight loss
<10%	303	90	127	58	0.71
>10%	32	10	98	57
Histology
SCC	191	57	NR	66	0.08
AC	113	34	54	45
LCC	31	9	98	56
Differentiation
Poor	138	41	47	47	<0.001
Moderate	144	43	190	64
Well	53	16	NR	68
Surgical procedure
Lobectomy+Wedge*	243	73	190	61	0.004
Pneumonectomy	92	27	37	47
Pathological stage
I	157	47	190	71	<0.001
II	136	40	61	51
IIIa	42	13	17	23
Tumor status					<0.001
1	85	25	190	74
2	188	56	84	57
3	62	19	25	36
Nodal status
0	232	69	190	66	<0.001
1	76	23	35	43
2	27	8	18	18
Surgical margins
Free	307	92	190	58	0.29
Not free	28	8	47	47
Vascular infiltration
No	284	85	190	58	<0.001
Yes	51	15	27	32

*Wedge, n = 10.

Abbreviations: NR = not reached; PS = Performance status; SCC = Squamous cell carcinoma, LCC = Large-cell carcinoma; AC = Adenocarcinoma (including bronchioloalveolar carcinoma).