Table 4.

Survival analysis of NSCLC patients.

	Univariate survival analysis			Multivariate Cox regression
	HR	P-value	95% CI	HR	P-value	95% CI
Plk1 mRNA expression	1.150	0.001	1.055 - 1.253	1.126	0.075	0.988 - 1.283
CA IX expression	2.560	0.002	1.396 - 4.675	6.484	0.010	1.566 - 26.838
TP53 status	3.240	0.004	1.456 - 7.098	5.766	0.011	1.506 - 22.079
Clinical stage	2.470	0.006	1.263 - 4.879	5.680	0.038	1.104 - 29.225
Lymph node metastasis	1.466	0.050	1.000 - 2.140
Distant metastasis	3.635	0.002	1.521 - 7.866

HR: Hazard Ratio, 95% CI: 95% confidence interval.