Table 1.
Clinical characteristics of patients with esophageal squamous cell carcinoma.
| Characteristics | Case (%) |
|---|---|
| Gender | |
| Male | 1061 (64.93) |
| Female | 573 (35.07) |
| Age at diagnosis in year | |
| Mean ± SD | 61 ± 8 |
| Smoking history | |
| Yes | 781 (47.80) |
| No | 853 (52.20) |
| Drinking history | |
| Yes | 527 (32.25) |
| No | 1107 (67.75) |
| Family history | |
| Yes | 898 (54.96) |
| No | 736 (45.04) |
| Area | |
| High incidence area | 1138 (69.65) |
| Low incidence area | 496 (30.35) |
| Tumor location | |
| Upper | 271 (16.59) |
| Middle | 1110 (67.93) |
| Lower | 253 (15.48) |
| Differentiation | |
| Well | 134 (8.20) |
| Moderate | 975 (59.67) |
| Poor | 525 (32.13) |
| T stage | |
| T1 | 55 (3.37) |
| T2 | 375 (22.95) |
| T3 | 1177 (72.03) |
| T4 | 27 (1.65) |
| N stage | |
| N1 | 832 (50.92) |
| N0 | 802 (49.08) |