Multivariate analysis of potential risk factors for lymph node metastasis.
| Characteristics | HR | 95%CI | P |
|---|---|---|---|
| Tumor size, cm | |||
| ≤2 (n=45) | 6.235 | 1.150–35.112 | 0.038 |
| >2 (n=25) | |||
| Depth of invasion | |||
| Mucosa (n=46) | 13.354 | 1.371–97.014 | 0.031 |
| Submucosa (n = 24) | |||
| Lymphatic vessel involvement | |||
| Positive (n = 11) | 32.012 | 1.657–185.397 | 0.017 |
| Negative (n = 59) |