Table 1.
Patient and treatment characteristics.
| Variables | No Irradiation | Irradiation | Total | p-Value | |
|---|---|---|---|---|---|
| Location | |||||
| pre-canine | 20 (14.6%) | 10 (13.9%) | 30 (14.4%) | 0.71 | |
| post-canine | 70 (51.1%) | 40 (55.5%) | 110 (52.6%) | ||
| oropharyngeal | 42 (30.7%) | 20 (27.8%) | 62 (29.7%) | ||
| (missing) | 5 (3.6%) | 2 (2.8%) | 7 (3.3%) | ||
| Side | |||||
| left | 61 (44.5%) | 35 (49%) | 96 (46%) | 0.943 | |
| right | 76 (55.5%) | 37 (51%) | 113 (54%) | ||
| Midline involvement | |||||
| no | 109 (79.6%) | 57 (79.2%) | 166 (79.4%) | >0.999 | |
| yes | 26 (19%) | 14 (19.4%) | 40 (19.2%) | ||
| (missing) | 2 (1.4%) | 1 (1.4%) | 3 (1.4%) | ||
| Type of reconstruction | |||||
| Microvascular | 61 (44.5%) | 33 (45.8%) | 94 (45%) | 0.939 | |
| Pedicled flap | 8 (5.8%) | 4 (5.6%) | 12 (5.7%) | ||
| local | 58 (42.3%) | 27 (37.5%) | 85 (40.7%) | ||
| (missing) | 10 (7.3%) | 8 (11.1%) | 18 (8.6%) | ||
| T classification | |||||
| pT1 | 81 (59%) | 29 (40.3%) | 110 (52.6%) | 0.014 | |
| pT2 | 56 (41%) | 43 (59.7%) | 99 (47.4%) | ||
| Grading | |||||
| G1 | 4 (2.9%) | 2 (2.8%) | 6 (2.9%) | 0.029 | |
| G2 | 110 (80.3%) | 46 (63.9%) | 156 (74.6%) | ||
| G3 | 23 (16.8%) | 24 (33.3%) | 47 (22.5%) | ||
| Neck level | |||||
| 1 | 27 (19.7%) | 17 (23.6%) | 44 (21%) | 0.588 | |
| 2 | 80 (58.4%) | 38 (52.8%) | 118 (56.4%) | ||
| 3 | 13 (9.5%) | 11 (15.3%) | 24 (11.3%) | ||
| 4 | 2 (1.5%) | 0 (0%) | 2 (0.9%) | ||
| 5 | 1 (0.7%) | 0 (0%) | 1 (0.4%) | ||
| (missing) | 14 (10.2%) | 6 (8.3%) | 21 (10%) |