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| Variables | OS (%) | DFS (%) |
|---|---|---|
| Total | 89.42 | 71.47 |
| Different T stage | ||
| T3 | 92.12 | 73.47 |
| T4 | 64.29 | 75.00 |
| Different N stage | ||
| N0 | 100.00 | 90.90 |
| N1 | 74.64 | 57.09 |
| N2 | 86.67 | 58.72 |
| Nerve/vascular invasion | ||
| Yes | 75.16 | 28.25 |
| No | 97.06 | 97.73 |
OS, overall survival; DFS, disease-free survival; T, tumor; N, node.
