Table 2. Logistic regression analysis of the risk factors for node ratio (Nr).
| Factors | Univariate analysis | Multivariate analysis | ||
|---|---|---|---|---|
| OR (95% CI) | P value | OR (95% CI) | P value | |
| Gender | 1.004 (0.758–1.332) | 0.187 | - | - |
| Age | 1.165 (1.022–1.328) | 0.022 | 0.856 (0.640–1.146) | 0.244 |
| Tumor location | 0.382 (0.202–0.723) | 0.003 | 1.020 (0.861–1.208) | 0.973 |
| Macroscopic type | 1.430 (1.252–1.633) | < 0.001 | 0.807 (0.602–1.082) | 0.277 |
| Tumor differentiation | 1.697 (1.433–2.010) | < 0.001 | 1.045 (1.008–1.321) | 0.010 |
| Lymphovascular invasion | 1.436 (1.115–1.798) | 0.023 | 1.011 (1.002–1.230) | 0.045 |
| Perineural invasion | 1.037 (0.931–1.041) | 0.052 | - | - |
| Adjuvant chemotherapy | 0.843 (0.665–1.210) | 0.310 | - | - |
| Tumor size | 1.541 (1.326–1.791) | 0.011 | 0.903 (0.667–1.221) | 0.507 |
| Retrieved lymph node | 0.923 (0.771–1.132) | 0.123 | - | - |
| T Stage | 1.234 (1.012–1.991) | 0.023 | 1.085 (0.910–1.236) | 0.064 |
| N Stage | 3.812 (2.467–4.943) | < 0.001 | 2.631 (1.912–3.676) | < 0.001 |
OR: Odds Ratio; CI: Confidence Interval.