Table 3.

Multivariable analyses for OS and LCSS.

	OS			LCSS
Variables	HR	95% CI	P	HR	95% CI	P
Age, years	1.564	1.072–2.282	0.020	1.630	1.005–2.644	0.048
Laterality	0.756	0.573–0.996	0.047	0.712	0.498–1.018	0.062
Tumor location	0.800	0.683–0.938	0.006	0.695	0.559–0.865	0.001
N number	0.699	0.576–0.848	<0.001	0.703	0.554–0.890	0.004
Grade	1.139	0.956–1.357	0.146

OS, overall survival; LCSS, lung cancer specific survival; HR, hazard ratio; CI, confidence interval.