ORs (95% CIs) of hearing loss and noise notch by noise exposure levels at longest job
| Variables | Model A* | Model B† | Model C‡ | |
| A. ORs of hearing loss | Hearing loss no./participants no. | |||
| O*NET noise (unit score)§ | 1.74 (1.35 to 2.26) | 1.68 (1.30 to 2.18) | 1.65 (1.28 to 2.13) | |
| O*NET noise quintile | ||||
| Quintile 1 (1.795–2.588) | 65/695 | 1 (Reference) | 1 (Reference) | 1 (Reference) |
| Quintile 2 (2.653–2.729) | 76/830 | 1.04 (0.62 to 1.72) | 1.01 (0.60 to 1.69) | 0.99 (0.59 to 1.65) |
| Quintile 3 (2.737–2.868) | 67/731 | 1.14 (0.64 to 2.03) | 1.10 (0.62 to 1.96) | 1.09 (0.61 to 1.95) |
| Quintile 4 (3.121–3.631) | 112/805 | 1.61 (0.96 to 2.70) | 1.50 (0.89 to 2.52) | 1.43 (0.87 to 2.36) |
| Quintile 5 (3.667–4.368) | 136/767 | 2.30 (1.32 to 4.01) | 2.14 (1.22 to 3.75) | 2.07 (1.18 to 3.63) |
| p Trend | 0.001 | 0.0019 | 0.0026 | |
| B. ORs of noise notch | Noise notch no./participants no. | |||
| O*NET noise (unit score)§ | 1.45 (1.20 to 1.76) | 1.43 (1.18 to 1.73) | 1.41 (1.17 to 1.70) | |
| O*NET noise quintile | ||||
| Quintile 1 (1.795–2.588) | 101/695 | 1 (Reference) | 1 (Reference) | 1 (Reference) |
| Quintile 2 (2.653–2.729) | 119/830 | 0.98 (0.67 to 1.42) | 0.97 (0.67 to 1.42) | 0.96 (0.66 to 1.40) |
| Quintile 3 (2.737–2.868) | 77/731 | 0.80 (0.58 to 1.11) | 0.80 (0.58 to 1.10) | 0.79 (0.57 to 1.09) |
| Quintile 4 (3.121–3.631) | 168/805 | 1.40 (1.05 to 1.87) | 1.37 (1.02 to 1.84) | 1.35 (1.00 to 1.81) |
| Quintile 5 (3.667–4.368) | 190/767 | 1.60 (1.16 to 2.20) | 1.55 (1.12 to 2.14) | 1.51 (1.09 to 2.09) |
| p Trend | 0.0016 | 0.0032 | 0.0045 | |
↵* Model A was adjusted for age, age2, sex and race/ethnicity.
↵† Model B: model A+further adjusted for body mass index, ototoxic medication, cumulative cigarette pack-years, current diagnosis of hypertension and current diagnosis of diabetes.
↵‡ Model C: model B+further adjusted for recreation noise and firearm noise.
↵§ Per cent change in hearing thresholds for one-unit score increase.
O*NET, Occupational Information Network.