Table 4.
Potential predictors influencing DFS
| 2-y DFS (%) | DFS | ||
|---|---|---|---|
| yes | no | p value | |
| OC | 38.9 | 59.8 | 0.067 |
| Necrosis in LN | 63.8 | 49.1 | 0.245 |
| Bi-lateral ND | 50.3 | 54.7 | 0.654 |
| NAC | 87.5 | 48.6 | 0.076 |
| Rec | 30.6 | 59.6 | 0.062 |
| T4 | 37.5 | 56.2 | 0.21 |
| LN+ ≥2LN+ ≥2 | 44.9 | 76.5 | 0.019* |
| Extracapsular extention | 50.7 | 62.5 | 0.177 |
| Positive/close margin | 48.5 | 57.2 | 0.82 |
| Bilateral RT | 42 | 68.4 | 0.057 |
| IMRT | 69.5 | 35.7 | 0.047* |
| Systemic therapy | 38.7 | 57.1 | 0.449 |
| OC or rec | 33.9 | 66.4 | 0.013* |
| T4 or rec | 36.7 | 65.7 | 0.012* |
| OC or T4 | 37.5 | 65.1 | 0.012* |
| OC or T4 or rec | 37.9 | 72.4 | 0.006* |
DFS disease free survival
OC oral cavity, LN lymph node, ND neck dissection, Rec recurrence. *A P value of ≤0.05 was considered statistically significant