Table IV.

Univariate regression analysis for each clinicopathological characteristic in the training dataset.

	Univariate analysis
Variables	HR	95% CI	P-value
Age
≤60, n=99	1.966	1.113–3.473	0.0176a
>60, n=80	1.433	0.829–2.477	0.1954
Gender
Male, n=146	1.705	1.099–2.645	0.0160a
Female, n=33	1.707	0.691–4.219	0.2413
Alcohol use
Yes, n=106	1.767	1.038–3.007	0.0335a
No, n=73	1.771	0.9799–3.199	0.0552
Tobacco use
Yes, n=114	1.714	1.025–2.865	0.0375a
No, n=65	1.805	0.973–3.35	0.0576
Pathological grade
N0+N1, n=34	1.640	1.058–2.543	0.0256a
N2+N3, n=145	1.497	0.447–5.015	0.5099
Pathological grade
T1+T2, n=39	0.896	0.348–2.309	0.8198
T3+T4, n=140	1.998	1.24–3.219	0.0038a
Adjuvant therapy
Yes, n=104	1.197	0.742–1.932	0.4609
No, n=45	4.890	1.687–14.22	0.0013a

^aP<0.05. HR, Hazard ratio.