Table 4.

Results of the multivariable study of the influence of selected variables on overall survival in 337 patients with non-small cell lung cancer. Backward selection was used to select the variables

Variable	HR (95% CI)	p-value
Ever smoking vs. never smoking	3.62 (1.69–7.76)	0.000955
No chemo vs. chemo	2.03 (1.53–2.70)	0.000001
Palliative RT vs. curative RT	2.00 (1.49–2.68)	0.000004
OPN ≥104 ng/ml vs. OPN < 104 ng/ml	1.67 (1.27–2.20)	0.000285
T 3–4 vs. T1–2	1.52 (1.15–2.00)	0.003362
VEGF1 ≥ 362 pg/ml vs. VEGF< 362 pg/ml	1.51 (1.11–2.05)	0.007952