Table 3. Univariate and multivariate Cox regression analysis for OS in patients with OSCC.

Variables	Univariate analysis			Multivariate analysis
	P value	HR	95% CI	P value	HR	95% CI
Age (years)	0.003	1.021	1.007, 1.036	0.001	1.026	1.011, 1.041
Gender	0.459	1.150	0.794, 1.665	0.481	1.145	0.786, 1.666
Grade	0.127	1.215	0.946, 1.560	0.062	1.276	0.988, 1.648
Stage
(age ≦ 60)	0.034	1.425	1.026, 1.978	0.210	0.765	0.503, 1.163
(age >  60)	0.523	1.080	0.853, 1.367
N	0.015	1.263	1.046, 1.524	0.011	1.279	1.059, 1.546
T (age ≦ 60)	0.003	1.551	1.160, 2.075	0.293	1.101	0.921, 1.316
(age > 60)	0.873	0.982	0.783, 1.230
AC012456.4	0.006	0.706	0.551, 0.903	0.002	0.672	0.523, 0.863

Notes.

N

Regional Lymph Nodes

T

Primary Tumor