Table 3. Univariate and multivariate analyses of overall survival for the FUSCC cohort.

Prognostic factor	Univariate analysis				Multivariate analysis
	P value	HR	95% CI		P value	HR	95% CI
Age, years	<0.001	0.654	0.529–0.809		<0.001	0.514	0.412–0.641
Sex	0.354	1.104	0.895–1.362		–	–	–
Location	0.01	0.765	0.625–0.937		0.041	0.805	0.654–0.992
pT stage	<0.001	1.981	1.550–2.531		0.011	1.56	1.109–2.194
pN stage	<0.001	2.468	2.175–2.801		<0.001	1.878	1.620–2.178
pM stage	<0.001	1.781	1.509–2.102		<0.001	1.978	1.603–2.440
Venous invasion	<0.001	1.685	1.508–1.883		<0.001	1.492	1.273–1.749
Perineural invasion	<0.001	1.493	1.304–1.710		0.009	1.357	1.079–1.707
Tumor deposit	<0.001	3.246	2.607–4.042		<0.001	1.78	1.406–2.254

FUSCC, Fudan University Shanghai Cancer Center; HR, hazard ratio; CI, confidence interval.