Table 5.

Prognostic factors affecting clinical outcome in multivariate analysis.

Factor	HR (95% CI)	p
Overall survival
Nodal status (pN0 vs. pN1-3)	27.1 (3.19-229.32)	<0.01
Disease-specific survival
Nodal status (pN0 vs. pN1-3)	28.3 (3.33-241.53)	<0.01
Disease-free survival
Nodal status (pN0 vs. pN1-3)	7.3 (2.11-25.44)	<0.01
Surgical margin (≤2 mm vs. >2 mm)	0.1 (0.01-0.60)	0.02
Locoregional control
Nodal status (pN0 vs. pN1-3)	5.9 (1.59-21.92)	<0.01
Surgical margin (≤2 mm vs. >2 mm)	0.1 (0.01-0.72)	0.02

Abbreviations: HR, hazard ratio; 95% CI, 95% confidence interval.