Table 1. General characteristics of patients included in this study.
| Characteristics | n (%) |
|---|---|
| Gender | |
| male | 118 (67.8) |
| female | 56 (32.2) |
| Age at diagnosis (years) | |
| range | 14 - 81 |
| mean ± SD | 50.55±11.72 |
| BMI | |
| < 24 | 115 (66.1) |
| ≥ 24 | 59 (33.9) |
| Drinking | |
| yes | 44 (25.3) |
| no | 130 (74.7) |
| Smoking | |
| yes | 76 (43.7) |
| no | 98 (56.3) |
| Family history | |
| yes | 24 (13.8) |
| no | 150 (86.2) |
| T stage1 | |
| 1-2 | 45 (25.9) |
| 3-4 | 129 (74.1) |
| N stage1 | |
| 0-1 | 88 (50.6) |
| 2-3 | 86 (49.4) |
| Clinical stage1 | |
| I-II | 24 (13.8) |
| III-IV | 150 (86.2) |
| Treatment | |
| radiotherapy alone | 34 (19.5) |
| chemoradiotherapy | 140 (80.5) |
| EBV-DNA | |
| negative | 58 (33.3) |
| positive | 116 (66.7) |
1 Using 7th American Joint Committee on Cancer (AJCC) staging system.
BMI, body mass index; SD, standard deviation; EBV-DNA, plasma Epstein-Barr virus DNA.