Table 3.

Univariate and multivariate Cox regression analyses predicting cancer specific survival

Variable	Univariate analysis			Multivariate analysis
	HR	95% CI	P	HR	95% CI	P
Age	1.003	0.997–1.010	0.339	——	——	——
Gender	1.039	0.847–1.275	0.714	——	——	——
Tumor grade	0.944	0.722–1.234	0.674	——	——	——
Tumor multiplicity	0. 900	0.688–1.178	0.444	——	——	——
Tumor size	1.397	1.052–1.856	0.021	1.312	1.107–1.556	0.002
Lymphovascular invasion	1.272	1.002–1.614	0.048	1.291	1.021–1.631	0.033
Recurrence	5.726	4.707–6.965	<0.001	5.610	4.633–6.793	<0.001
Squamous differentiation	2.091	1.709–2.557	<0.001	2.068	1.693–2.526	<0.001

HR hazard ratio; CI confidence interval