Table 3.

Univariate and multivariate analyses of prognostic variables

Variables	Univariate analysis			Multivariate analysis
	HR	95% CI	P-value	HR	95% CI	P-value
Age (≤58 vs >58)			0.263
Sex (male vs female)			0.809
Tumor length
(<3 cm and 3–5 cm vs >5 cm)	1.346	0.973–1.863	0.003	1.170	0.773–1.770	0.458
Differentiation
(Well and moderate vs poor)	1.213	0.833–1.765	0.001	1.285	0.845–1.955	0.324
pT factor (T1+2 vs T3+4)			0.125
pN factor (N− vs N+)	3.433	2.106–5.595	0.000*	2.820	1.560–5.096	0.001*
Stage (I+II vs III+IV)	2.632	1.704–4.065	0.000*	1.373	0.731–2.575	0.324
AIP1 expression (high vs low)	1.614	1.044–2.497	0.028*	1.766	1.136–2.746	0.011*

Note:

^*P<0.05.

Abbreviations: pN−, no lymph node metastasis; pN+, lymph node metastasis.