Table 1. The clinicopathological characteristics of patients from the TCGA database.
| Characteristics | Number of case | No. of patients (%) |
|---|---|---|
| Age (years) | 346 | |
| ≦60 | 152(41.33%) | |
| ≧60 | 194(58.67%) | |
| Median (range) | 61.590(19–90) | |
| Gender | 347 | |
| Male | 236(68.01%) | |
| Female | 111(31.99%) | |
| Alcohol history | 339 | |
| No | 111(32.74%) | |
| Yes | 228(67.26%) | |
| Perineural invasion present | 263 | |
| No | 123(46.77%) | |
| Yes | 140(53.23%) | |
| Margin status | 324 | |
| Close | 39(12.04%) | |
| Negative | 244(75.31%) | |
| Positive | 41(12.65%) | |
| Lymphovascular invasion present | 250 | |
| Yes | 76(30.40%) | |
| No | 174(69.60%) | |
| Tumor stage | 314 | |
| Stage I | 21(6.69%) | |
| Stage II | 56(17.83%) | |
| Stage III | 64(20.38%) | |
| Stage IV | 173(55.10%) | |
| T stage | 335 | |
| T1 | 34(10.15%) | |
| T2 | 103(%) | |
| T3 | 70(%) | |
| T4 | 128(%) | |
| N stage | 334 | |
| NO | 126(37.72%) | |
| N1 | 52(15.57%) | |
| N2 | 110(32.93%) | |
| N3 | 46(13.77%) | |
| M stage | 170 | |
| M0 | 125(73.53%) | |
| M1 | 45(26.47%) | |
| Histologic grade | 344 | |
| G1 | 53(15.41%) | |
| G2 | 210(61.05%) | |
| G3 | 71(20.64%) | |
| G4 | 10(2.91%) | |
| Vital status | 347 | |
| Alive | 227(65.42%) | |
| Dead | 120(34.58%) |