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Clinicopathological characteristics of ESCC patients
| Characteristic | Sample number | Percent |
|---|---|---|
| Gender | ||
| Male | 73 | 76.8 |
| Female | 22 | 23.2 |
| Age (years) | ||
| ≤65 | 49 | 51.6 |
| >65 | 46 | 48.4 |
| Histological grade | ||
| I | 7 | 7.4 |
| II | 64 | 67.4 |
| III | 24 | 25.2 |
| Tumor size (cm) | ||
| ≤5 | 58 | 61.1 |
| >5 | 28 | 29.5 |
| Unknown | 9 | 9.4 |
| T stage | ||
| T1-2 | 17 | 17.9 |
| T3-4 | 74 | 77.9 |
| Unknown | 4 | 10.2 |
| Lymph nodes metastasis | ||
| N0 | 45 | 47.4 |
| N1-3 | 49 | 51.6 |
| Unknown | 1 | 1 |
| TNM stage | ||
| TNM1-2 | 47 | 49.5 |
| TNM3-4 | 44 | 46.3 |
| Unknown | 4 | 4.2 |
