Table 1.
Descriptive statistics of variables in the sample.
| All participants | n = 196 |
| Male | n = 151 |
| Female | n = 45 |
| Age in years | |
| Average ± SD | 63.13 ± 10.99 |
| Median | 61 |
| Values of histopathological variables | |
| Grade 1 | 66 (33.7%) |
| Grade 2 | 95 (48.5%) |
| Grade 3 | 31 (15.8%) |
| Grade 4 | 4 (2%) |
| Extranodal extension | 45 (22.9%) |
| Angioinvasion | 31 (15.8%) |
| Perineural invasion | 91 (46.4%) |
| Average tumor stroma ratio | 39.6 |
| Tumor budding | |
| Grade I (<5) | 130 (66.3%) |
| Grade II (>5) | 66 (33.7%) |
| Combined score | |
| Low risk | 85 (43.4%) |
| Intermediate risk | 74 (37.8%) |
| High risk | 37 (18.9%) |
| Average depth of tumor invasion (mm) | 15.09 |
| Average tumor diameter (mm) | 32.1 |
| Number of patients with metastatic disease at the start of treatment | 93 (47.4%) |
| Number of patients with the occurrence of metastatic disease during follow-up | 49 (25%) |
| TNM categories | |
| pT1 | 15 (7.6%) |
| pT2 | 55 (28.1%) |
| pT3 | 41 (20.9%) |
| pT4 | 85 (43.4%) |
| N0 | 103 (55.6%) |
| N1 | 23 (11.7%) |
| N2 | 35 (17.9%) |
| N3 | 35 (17.9%) |
| Localization | |
| Retromolar | 37 (18.9%) |
| Manidibular gingiva | 49 (25%) |
| Sublingual | 59 (30.1%) |
| Tongue | 29 (14.8%) |
| Maxillary gingiva | 9 (4.6%) |
| Hard palate | 13 (6.6%) |
| Average follow-up in months | 44.9 |