Table 3. Multivariate cox proportional hazard analysis of prognostic variables in lung cancer patients.

	For Overall Survival			For Disease-Free Survival
Variable	HR	95% CI	Pa	HR	95% CI	Pa
Age > 59b (vs. ≤ 59 y)	1.283	0.834 to 1.975	0.257	1.120	0.738 to 1.699	0.594
Gender Female (vs. Male)	0.657	0.400 to 1.077	0.096	0.792	0.494 to 1.272	0.336
Clinical stage IV + III (vs. II + I)	2.813	1.811 to 4.369	< 0.001	2.564	1.672 to 3.932	< 0.001
P53 Positive (vs. Negative)	1.011	0.643 to 1.590	0.961	1.288	0.830 to 1.998	0.259
Ki67 Positive (vs. Negative)	2.157	1.379 to 3.374	0.001	1.661	1.085 to 2.542	0.020
Bora High expression(vs. Low expression)	1.838	1.919 to 2.836	0.006	1.671	1.088 to 2.565	0.019

^alog-rank test, ^bmedian age; HR, hazard ratio; CI, confidence interval.