Table 1.
Clinical parameters of esophageal squamous cell carcinoma patients and healthy controls n (%)
| ESCC patients (n = 72) | Healthy controls (n = 83) | |
| Age (yr) | ||
| < 50 | 5 (7) | 16 (19) |
| ≥ 50 | 67 (93) | 67 (81) |
| Gender | ||
| Male | 52 (72) | 45 (54) |
| Female | 20 (28) | 38 (46) |
| Histological grade | ||
| Well | 16 (22) | - |
| Well/moderate | 2 (3) | - |
| Moderate | 33 (46) | - |
| Moderate/poor | 3 (4) | - |
| Poor | 15 (21) | - |
| Unknown | 3 (4) | - |
| Tumor size (cm) | ||
| < 5 | 32 (44) | - |
| ≥ 5 | 37 (51) | - |
| Unknown | 3 (5) | - |
| TNM stage | ||
| I | 14 (19) | - |
| II | 21 (29) | - |
| III | 31 (43) | - |
| Unknown | 6 (8) | - |
| Lymph node metastasis | ||
| Yes | 34 (47) | - |
| No | 31 (43) | - |
| Unknown | 7 (10) | - |
ESCC: Esophageal squamous cell carcinoma.