| Variable | Univariate analysis | Multivariate analysis |
|---|
| OR | 95% CI | P | OR | 95% CI | P |
|---|
| Age | 1.00 | 0.98–1.03 | 0.772 | | | |
| Gender: |
| Female | 0.94 | 0.52–1.71 | 0.84 | | | |
| Male (Ref) | 1 | | | | | |
| T stage: |
| T1 | 3.63 | 1.82–7.20 | < 0.001 | 2.96 | 1.07–8.13 | 0.036 |
| T2 | 2.83 | 1.07–7.46 | 0.035 | 2.24 | 0.56–8.90 | 0.25 |
| T3 | 1.79 | 0.84–3.85 | 0.134 | | | |
| T4 (Ref) | 1 | | | | | |
| N stage: |
| N0 | 1.87 | 0.76–4.56 | 0.136 | | | |
| N1 | 0.90 | 0.42–1.94 | 0.86 | | | |
| N2 | 0.62 | 0.28–1.36 | 0.24 | | | |
| N3 (Ref) | 1 | | | | | |
| AJCC Stage: |
| Stage I | 4.2 | 1.67–10.51 | 0.002 | 1.78 | 0.39–8.11 | 0.046 |
| Stage II | 2.31 | 1.12–4.76 | 0.023 | 0.75 | 0.23–2.46 | 0.633 |
| Stage III | 1.29 | 0.68–2.44 | 0.433 | | | |
| Stage IV (Ref) | 1 | | | | | |
| Treatment modality: |
| RT alone | 3.12 | 1.45–6.74 | 0.004 | 1.36 | 0.39–4.72 | 0.627 |
| ChemoRT | 2.51 | 1.32–4.78 | 0.005 | 2.46 | 0.98–6.16 | 0.054 |
| Induction chemo (Ref) | 1 | | | | | |
- OR Odds Ratio, CI Confidence Interval, AJCC American Joint Committee on Cancer, RT Radiotherapy, Ref Reference
