Table 3.
Hazard ratio for outcome compared between with and without ZMC fracture by follow-up duration
| Follow time | ZMC fracture | Compared to non-ZMC fracture | ||||||
|---|---|---|---|---|---|---|---|---|
| No | Yes | |||||||
| Event | PY | Rate# | Event | PY | Rate# | IRR† (95 % CI) | Adjusted HR‡ (95 % CI) | |
| Sudden hearing loss | ||||||||
| ≤2 | 2 | 9,245 | 2.16 | 3 | 2,305 | 13.0 | 6.02 (4.95, 7.31)*** | 6.09 (1.02, 36.4)* |
| >2 | 4 | 18,246 | 2.19 | 1 | 4,457 | 2.24 | 1.02 (0.78, 1.34) | 1.02 (0.11, 9.11) |
| Tinnitus | ||||||||
| ≤2 | 15 | 9,231 | 16.3 | 13 | 2,290 | 56.8 | 3.49 (2.92, 4.18)*** | 3.40 (1.62, 7.16)** |
| >2 | 40 | 18,082 | 22.1 | 9 | 4,370 | 20.6 | 0.93 (0.73, 1.18) | 0.92 (0.45, 1.90) |
| Trigeminal neuralgia | ||||||||
| ≤2 | 2 | 9,246 | 2.16 | 3 | 2,302 | 13.0 | 6.02 (1.92, 7.38)*** | 6.03 (1.01, 36.1)* |
| >2 | 2 | 18,250 | 1.10 | 1 | 4,467 | 2.24 | 2.04 (1.62, 2.57)*** | 2.09 (0.19, 23.0) |
| Peripheral vertigo | ||||||||
| ≤2 | 25 | 9,225 | 27.1 | 6 | 2,301 | 26.1 | 0.96 (0.77, 1.20) | 0.95 (0.39, 2.33) |
| >2 | 22 | 18,062 | 12.2 | 10 | 4,419 | 22.6 | 1.86 (1.51, 2.28)*** | 1.84 (0.87, 3.88) |
* p < 0.05; ** p < 0.01; *** p < 0.001
#Rate, incidence rate, per 10,000 person-years
†IRR, incidence rate ratio, per 10,000 person-years
‡Adjusted HR, model adjusted for age, sex and otitis media