Table 4. Multivariate Cox regression model for OS.

	HR	CI (95%)	p-value
PS (2-4 vs 0-1)	3.56	(1.89-6.67)	<0.001
Treatment (Yes vs No)	0.16	(0.06-0.44)	<0.001
Stage (IV vs I-III)	2.98	(1.31-6.79)	0.009
Pleural Mets (Present)	2.05	(1.01-4.14)	0.047
Tobacco (former vs current)	1.96	(1.05-3.67)	0.035
sHGF (>=1886 pg/ml)	1.94	(1.13-3.31)	0.016