Table 4 Multivariate analysis of overall and recurrence-free survival according to patient characteristics and treatment variables
Characteristic | Overall survival p-value | Overall survival HR (95% CI) | Recurrence-free survival p-value | Recurrence-free survival HR (95% CI) |
|---|---|---|---|---|
Chemotherapy | 0.017 | 0.426 (0.212–0.858) | 0.002 | 0.248 (0.103–0.596) |
Betel quid | 0.004 | 3.951 (1.567–9.966) | NS | NS |
Anemia | 0.003 | 3.1 (1.488–6.461) | NS | NS |
Pathological T4 | NS | NS | 0.016 | 0.355 (0.153–0.826) |
Invasion depth ≥ 11 mm | 0.007 | 0.187 (0.055–0.632) | < 0.001 | 0.077 (0.02–0.303) |
Interval between surgery and PORT | NS | NS | 0.003 | 3.872 (1.582–9.474) |