Age- and sex-adjusted and multivariable-adjusted ORs of hearing impairment by the degree of proteinuria
| Age and sex adjusted | Multivariable adjusted* | |||
| Case/N | OR (95% CI) | Case/N | OR (95% CI) | |
| >30 dB<at 1 kHz and/or>40 dB at 4 kHz (total moderate hearing impairment) | ||||
| Proteinuria | ||||
| − | 143/5180 | Reference | 143/5180 | Reference |
| +/− | 6/289 | 0.92 (0.30 to 2.12) | 6/289 | 0.92 (0.40 to 2.13) |
| + | 8/197 | 1.41 (0.67 to 2.94) | 8/197 | 1.33 (0.63 to 2.80) |
| ≥2 + | 5/33 | 5.99 (2.17 to 16.57) | 5/33 | 5.35 (1.87 to 15.25) |
| >30 dB at 1 kHz | ||||
| Proteinuria | ||||
| − | 39/5180 | Reference | 39/5180 | Reference |
| +/− | 2/289 | 1.06 (0.26 to 4.45) | 2/289 | 1.09 (0.26 to 4.60) |
| + | 2/197 | 1.32 (0.32 to 5.54) | 2/197 | 1.07 (0.25 to 4.57) |
| ≥2+ | 1/33 | 3.69 (0.49 to 28.05) | 1/33 | 2.48 (0.31 to 20.07) |
| >40 dB at 4 kHz | ||||
| Proteinuria | ||||
| − | 113/5180 | Reference | 113/5180 | Reference |
| +/− | 5/289 | 1.00 (0.40 to 2.50) | 5/289 | 1.00 (0.40 to 2.49) |
| + | 7/197 | 1.53 (0.70 to 3.38) | 7/197 | 1.51 (0.68 to 3.33) |
| ≥2 + | 4/33 | 5.78 (1.89 to 17.68) | 4/33 | 5.71 (1.81 to 18.08) |
*The multivariable-adjusted prevalence of hearing impairment was calculated with adjustment for age, sex, body mass index (kg/m2), hypertension (yes or no), diabetes mellitus (yes or no), serum creatinine (sex-specific quintile) and current smoking status (yes or no) at baseline, as well as history of noisy work environment from 2008 to 2016 (yes or no).