Table 1.
Patients' characteristics.
| number of patients | % | |
|---|---|---|
| Age | ||
| Median | 64 | |
| Range | 25-95 | |
| Gender | ||
| Male | 1452 | 81.6 |
| Female | 328 | 18.4 |
| Race | ||
| Caucasian | 1378 | 77.4 |
| Asian | 117 | 6.6 |
| African American | 285 | 16.0 |
| T classification | ||
| T1 | 197 | 11.1 |
| T2 | 619 | 34.8 |
| T3 | 459 | 25.8 |
| T4a | 341 | 19.2 |
| T4b | 164 | 9.2 |
| N classification | ||
| N0 | 606 | 34.0 |
| N1 | 309 | 17.4 |
| N2a | 76 | 4.3 |
| N2b | 428 | 24.0 |
| N2c | 282 | 15.8 |
| N3 | 79 | 4.4 |
| Grade | ||
| 1 | 88 | 4.9 |
| 2 | 909 | 51.1 |
| 3 | 783 | 44.0 |
| Surgery therapy | ||
| Yes | 451 | 25.3 |
| No | 1329 | 74.7 |
| Tumor location | ||
| Pyriform sinus | 889 | 49.9 |
| Postcricoid region | 63 | 3.5 |
| Aryepiglottic fold, hypopharyngeal | 141 | 7.9 |
| Posterior wall of hypopharynx | 134 | 7.5 |
| Overlapping lesion of hypopharynx | 58 | 3.3 |
| Hypopharynx, NOS | 495 | 27.8 |
Abbreviations: NOS: not otherwise specified