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Cross-table analysis of changes in the lymph node stage grouping N categories to Nr categories of 2011 patients with esophageal squamous cell carcinoma (n = 2011)
| Nr0 | Nr1 | Nr2 | Nr3 | Total | |
| N0 | 1136 | 0 | 0 | 0 | 1136 |
| N1 | 0 | 187 | 213 | 96 | 496 |
| N2 | 0 | 11 | 46 | 236 | 293 |
| N3 | 0 | 0 | 1 | 85 | 86 |
| Total | 1136 | 198 | 260 | 417 | 2011 |
