Table 3.
Multivariate analysis for DMFS and DFS
| Characteristic | DMFS |
DFS |
||
|---|---|---|---|---|
| HR (95% CI) | p-valuea) | HR (95% CI) | p-valuea) | |
| Histology | ||||
| SqCC | 1 | 0.001 | 1 | < 0.001 |
| Others | 2.96 (1.58-5.56) | 3.46 (1.97-6.07) | ||
| Lymphovascular invasion | ||||
| Negative | 1 | 0.020 | 1 | 0.017 |
| Positive | 4.08 (1.25-13.34) | 3.10 (1.22-7.87) | ||
| No. of metastatic LNs | ||||
| ≤ 3 | 1 | 0.031 | 1 | 0.001 |
| > 3 | 2.08 (1.07-4.04) | 2.65 (1.48-4.75) | ||
DMFS, distant metastasis-free survival; DFS, disease-free survival; HR, hazard ratio; CI, confidence interval; SqCC, squamous cell carcinoma; LN, lymph node.
a)
p-value by Cox proportional hazard model with backward stepwise regression.