Age- and sex-adjusted and multivariable-adjusted ORs of hearing impairment by the presence 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 (0.40 to 2.12) | 6/289 | 0.92 (0.40 to 2.13) |
| ≥+ | 13/230 | 1.99 (1.10 to 3.61) | 13/230 | 1.85 (1.01 to 3.39) |
| >30 dB at 1 kHz | ||||
| Proteinuria | ||||
| − | 39/5180 | Reference | 39/5180 | Reference |
| +/− | 2/289 | 1.06 (0.26 to 4.45) | 2/289 | 1.10 (0.26 to 4.60) |
| ≥+ | 3/230 | 1.68 (0.51 to 5.50) | 3/230 | 1.31 (0.39 to 4.42) |
| >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) |
| ≥ + | 11/230 | 2.09 (1.10 to 3.99) | 11/230 | 2.03 (1.06 to 3.92) |
*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).