Table 1. Demographic characteristics and clinical features of OSCC patients.
| Variables | OSCC (n = 330) |
| Age (years) | 54.99±10.88 |
| Smoking status | |
| No | 35 (10.6%) |
| Yes | 295 (89.4%) |
| Drinking status | |
| No | 138 (41.8%) |
| Yes | 192 (58.2%) |
| Betel nuts chewing | |
| No | 72 (21.8%) |
| Yes | 258 (78.2%) |
| Cancer location | |
| Buccal mucosa | 120 (36.4%) |
| Tongue | 98 (29.7%) |
| Gingiva | 49 (14.8%) |
| Others | 63 (19.1%) |
| Stage | |
| I | 72 (21.8%) |
| II | 59 (17.9%) |
| III | 36 (10.9%) |
| IV | 163 (49.4%) |
| Tumor T status | |
| T1 | 92 (27.9%) |
| T2 | 97 (29.4%) |
| T3 | 32 (9.7%) |
| T4 | 109 (33.0%) |
| Lymph node status | |
| N0 | 201 (60.9%) |
| N1 | 43 (13.0%) |
| N2 | 83 (25.2%) |
| N3 | 3 (0.9%) |
| Metastasis | |
| M0 | 328 (99.4%) |
| M1 | 2 (0.6%) |
| Cell differentiation | |
| Well differentiated | 35 (10.6%) |
| Moderately or poorly differentiated | 295 (89.4%) |