Table 4.
Modified pN stage in the training cohort.
| Variables | HR (95%CI) | 3-Y OS (%) | 5-Y OS (%) | χ2 | P value* | mpN stage |
|---|---|---|---|---|---|---|
| pN1aTD– | 1 (Reference) | 89.1 | 81.7 | – | – | mpN1a |
| pN1bTD– | 1.317 (1.147–1.513) | 85.1 | 76.4 | 11.848 | <0.001 | mpN1b |
| pN1c | 1.425 (1.102–1.844) | 84.5 | 75.5 | 0.409 | 0.522 | |
| pN1aTD+ | 1.767 (1.270–2.458) | 82.1 | 69.2 | 1.244 | 0.265 | mpN2a |
| pN2aTD– | 1.822 (1.569–2.116) | 79.4 | 69.2 | 0.037 | 0.848 | |
| pN1bTD+ | 2.421 (1.877–3.122) | 79.3 | 63.1 | 4.896 | 0.027 | mpN2b |
| pN2aTD+ | 2.804 (2.153–3.651) | 70.8 | 57.2 | 0.785 | 0.382 | |
| pN2bTD– | 3.109 (2.682–3.604) | 64.4 | 53.0 | 0.703 | 0.402 | |
| pN2bTD+ | 4.280 (3.346–5.474) | 60.0 | 40.1 | 5.734 | 0.017 | mpN2c |
CI, confidence interval; HR, hazard ratios; mpN, modified pathological N; OS, overall survival; pN, pathological N; Y, year.
*P value based on log-rank test.