| | 5-year | Median survival | | |
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Variable | All (%) | Survival rate (%) | Time (months) | χ2value |
P-value |
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pN1 | | | | 2.136 | 0.144 |
1 field | 160 (29.3) | 45.6 | 51.8 | | |
2 fields | 66 (12.1) | 36.8 | 42.3 | | |
pN2 | | | | 1.940 | 0.379 |
1 field | 30 (5.5) | 32.6 | 24.2 | | |
2 fields | 126 (23.0) | 20.3 | 24.9 | | |
3 fields | 65 (11.9) | 15.5 | 21.9 | | |
pN3 | | | | 2.311 | 0.315 |
1 field | 1 (0.2) | 0.0 | 31.5 | | |
2 fields | 22 (4.0) | 25.0 | 16.7 | | |
3 fields | 77 (14.1) | 5.1 | 14.7 | | |
Fields of LNM | | | | 0.154 | 0.695 |
C + M | 163 (76.2) | 23.7 | 25.9 | | |
C + A | 51 (23.8) | 30.1 | 34.0 | | |
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Abbreviations: A, abdominal; C, cervical; LNM, lymph node metastasis; M, mediastinal.
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a1 field (cervical lymph nodes), 2 fields (cervical + mediastinal, and/or cervical + abdominal lymph nodes), 3 fields (cervical + mediastinal + abdominal lymph nodes) with positive lymph nodes.
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Abbreviations: CI = confidence interval; CLM = cervical lymph node metastasis; HR = hazard ratio; LNM, lymph node metastasis; SE = standard error; TE-SCC = thoracic esophageal squamous cell carcinoma.