Table 5.
Potential predictors influencing DFS for patients excluding bilateral neck lymph node metastasis
| 2-y DFS (%) | DFS | |||||
|---|---|---|---|---|---|---|
| yes | no | p value in uni. | p value in multi. | HR | 95 % CI | |
| OC | 36.9 | 64.4 | 0.034* | |||
| Necrosis in LN | 64.9 | 48.4 | 0.423 | |||
| Bi-lateral ND | 53.0 | 55.9 | 0.998 | |||
| NAC | 87.5 | 48.6 | 0.076 | |||
| Rec | 30.6 | 64.2 | 0.029* | |||
| T4 | 46.7 | 56.6 | 0.398 | |||
| LN+ ≥2LN+ ≥2 | 45.3 | 76.5 | 0.032* | 0.062 | ||
| Extracapsular extention | 52.2 | 57.1 | 0.442 | |||
| Positive/close margin | 56.1 | 54.2 | 0.824 | |||
| Bilateral RT | 44.4 | 67.3 | 0.146 | |||
| IMRT | 60.8 | 33.3 | 0.050* | 0.162 | ||
| Systemic therapy | 43.3 | 56.5 | 0.619 | |||
| OC or rec | 31.9 | 74.0 | 0.004* | 0.006 | 1.696 | 1.29–1.87 |
DFS disease free survival, uni. univariate analysis, multi. multivariate analysis, HR hazard ration, CI confidence interval, OC oral cavity, LN lymph node, ND neck dissection, Rec recurrence. *A P value of ≤0.05 was considered statistically significant