Table 3 Relationships among tumor depth, histological type, and lymph node metastases
Tumor depth | Histologic type | pN(+) | Hazard ratio | 95% confidence interval | p-value |
|---|---|---|---|---|---|
m-sm1 (n = 204) | Differentiated | 1/72 (1.4%) | 1.000 | Â | Â |
| Â | Mixed differentiated | 1/31 (3.2%) | 2.367 | 0.092-61.123 | 0.5527 |
| Â | Mixed undifferentiated | 3/22 (13.6%) | 11.211 | 1.351-233.786 | 0.0251* |
| Â | Undifferentiated | 3/79 (3.8%) | 2.803 | 0.350-57.357 | 0.3449 |
sm2 (n = 123) | Differentiated | 11/41 (26.8%) | 1.000 | Â | Â |
| Â | Mixed differentiated | 8/25 (32.0%) | 1.283 | 0.423-3.808 | 0.6539 |
| Â | Mixed undifferentiated | 8/14 (57.1%) | 3.636 | 1.042-13.478 | 0.0430* |
| Â | Undifferentiated | 10/43 (23.3%) | 0.826 | 0.303-2.230 | 0.7054 |