Table 2.
Patient baseline demographic and disease features.
| Characteristics | All Patients (N = 749) | |
|---|---|---|
| No. of patients | % | |
| Age (years) | ||
| ≤ 50 | 553 | 73.8 |
| >50 | 196 | 26.2 |
| Sex | ||
| Male | 580 | 77.4 |
| Female | 169 | 22.6 |
| Pathology type | ||
| Non-keratinizing carcinoma | 744 | 99.3 |
| Keratinizing squamous cell carcinoma | 5 | 0.7 |
| Chemotherapy | ||
| Yes | 535 | 71.4 |
| No | 214 | 28.6 |
| T category† | ||
| T1–2 | 317 | 42.3 |
| T3–4 | 432 | 57.7 |
| N category† | ||
| N0–1 | 593 | 79.2 |
| N2–3 | 156 | 20.8 |
| Stage† | ||
| I–II | 257 | 34.3 |
| III–IV | 492 | 65.7 |
T, tumor; N, node.
†
According to the 7th Union for International Cancer Control/American Joint Committee on Cancer staging system.