Table 1. The features of the patients and the tumor tissue samples detected.
| Variable | No. (%) | Variable | No. (%) |
| Gender | Grade | ||
| male | 71 (78.9) | 1 | 59 (65.6) |
| female | 19 (21.1) | 2 | 24 (26.7) |
| Age (y) | 3 | 7 (7.8) | |
| ≤40 | 7 (7.8) | Clinical stage | |
| >40, ≤60 | 57 (63.3) | I | 35 (38.9) |
| >60 | 26 (28.9) | II | 12(13.3) |
| BMI | III | 18(20.0) | |
| <25 | 49(54.4) | IV | 25(27.8) |
| ≥25 | 41 (45.6) | T stage | |
| Necrosis | T1 | 41(45.6) | |
| no | 43 (47.8) | T2 | 18(20.0) |
| yes | 47 (52.2) | T3 | 26(28.9) |
| Tumor size (cm) | T4 | 5(5.6) | |
| ≤4 | 21(23.3) | Metastatic status | |
| >4, ≤7 | 28(31.1) | NM | 65(72.2) |
| >7, ≤10 | 25(27.8) | LM | 6 (6.7) |
| >10 | 16 (17.8) | HM | 19(21.1) |
Abbreviation: BMI: body mass index; NM: tumors involving non-metastasis; LM: tumors involving lymphatic metastases; HM: tumors involving hematogenous metastases.