Variable | Proportion of post-op exposure | Hazard ratio | 95% CI | P-Value | |
---|---|---|---|---|---|
Exposure | No exposure | ||||
 Age | |||||
 <60 years | 15 (4.1%) | 145 (39.7%) | 1.43 | 0.75 – 2.74 | 0.274 |
 >60 years | 24 (6.6%) | 181 (49.6%) |  |  |  |
Sex | |||||
 male | 27 (7.4%) | 199 (54.5%) | 0.674 | 0.341 – 1.331 | 0.255 |
 female | 12 (3.3%) | 127 (34.8%) |  |  |  |
T2DM | |||||
 yes | 4 (1.1%) | 35 (9.6%) | 1.051 | 0.373 – 2.957 | 0.925 |
 no | 35 (9.6%) | 290 (79.5%) |  |  |  |
 missing |  | 1 (0.2%) |  |  |  |
Smoking | |||||
 active smoker | 11 (3.0%) | 91 (24.9%) | 0.986 | 0.668 – 1.456 | 0.943 |
 ex-smoker | 12 (3.2%) | 99 (27.1%) |  |  |  |
 non-smoker | 15 (4.1%) | 119 (32.6%) |  |  |  |
 missing | 1 (0.2%) | 17 (4.9%) |  |  |  |
Adj radiotherapy | |||||
 yes | 28 (7.7%) | 205 (56.2%) | 1.461 | 0.727 – 2.940 | 0.287 |
 no | 11 (3.0%) | 121 (33.1%) |  |  |  |
Use of rescue screw | |||||
 yes | 14 (35.9%) | 62 (19.0%) | 1.132 | 0.849 – 1.510 | 0.398 |
 no | 24 (61.5%) | 210 (64.4%) |  |  |  |
 missing | 1 (2.6%) | 54 (16.6%) |  |  |  |
Use of locking screw | |||||
 yes | 10 (25.6%) | 52 (16.0%) | 1.06 | 0.731 – 1.528 | 0.767 |
 no | 28 (71.8%) | 219 (67.2%) |  |  |  |
 missing | 1 (2.6%) | 55 (16.9%) |  |  |  |
Segmental Mandibulectomy | |||||
 yes | 30 (76.9%) | 182 (55.8%) | 2.556 | 1.212 – 5.391 | 0.014 |
 no | 9 (23.1%) | 140 (43.0%) |  |  |  |
 missing |  | 4 (1.2%) |  |  |  |
Adverse Soft Tissue | |||||
 yes | 20 (51.3%) | 159 (48.8%) | 1.312 | 0.671 – 2.565 | 0.427 |
 no | 15 (38.5%) | 165 (50.6%) |  |  |  |
 missing | 4 (10.2%) | 2 (0.6%) |  |  |  |
Plate Height | |||||
 10 mm | 3 (7.7%) | 7 (2.1%) | 1.436 | 1.131 – 1.824 | 0.003 |
 15 mm | 25 (64.1%) | 236 (72.4%) |  |  |  |
 20 mm | 1 (2.6%) | 5 (1.5%) |  |  |  |
 24 mm | 3 (7.7%) | 12 (3.7%) |  |  |  |
 28 mm | 6 (15.3%) | 8 (2.5%) |  |  |  |
 missing | 1 (2.6%) | 58 (17.8%) |  |  |  |
Post-op Infection | |||||
 yes | 21 (5.8%) | 63 (17.2%) | 5.72 | 3.04 – 10.80 | <0.001 |
 no | 18 (4.9%) | 263(72.1%) |  |  |  |