Table 1. Clinicopathological parameters of HNSCC patients in the TCGA database.
| Clinical parameters | Variable | Total (528) | Percentages (%) |
| Age | <=65 | 345 | 65.3% |
| >65 | 182 | 34.5% | |
| Unknow | 1 | 0.2% | |
| Gender | Female | 142 | 26.9% |
| Male | 386 | 73.1% | |
| Grade | G1 | 63 | 11.9% |
| G2 | 311 | 58.9% | |
| G3 | 125 | 23.7% | |
| G4 | 7 | 1.3% | |
| GX | 22 | 4.2% | |
| Pathological stage | Stage I | 27 | 5.1% |
| Stage II | 74 | 14.0% | |
| Stage III | 82 | 15.5% | |
| Stage IV | 270 | 51.1% | |
| Unknow | 75 | 14.2% | |
| T stage | T0 | 1 | 0.2% |
| T1 | 49 | 9.3% | |
| T2 | 140 | 26.5% | |
| T3 | 101 | 19.1% | |
| T4 | 175 | 33.1% | |
| TX | 62 | 11.7% | |
| M stage | M0 | 191 | 36.2% |
| M1 | 1 | 0.2% | |
| MX | 336 | 63.6% | |
| N stage | N0 | 180 | 34.1% |
| N1 | 68 | 12.9% | |
| N2 | 172 | 32.6% | |
| N3 | 8 | 1.5% | |
| NX | 100 | 18.9% | |
| Survival status | Dead | 199 | 37.7% |
| Alive | 329 | 62.3% |
Abbreviations: T, Tumor; M, Metastasis; N, Node.