Model coefficients (95% CIs) at 4 kHz*
| Audiometry | I/O 40 dB | I/O 65 dB | |
|---|---|---|---|
| *Note that a positive coefficient for the audiometry model indicates association with worse hearing, whereas a positive coefficient for the OAE models indicates association with stronger response, or “better” hearing. | |||
| Years since baseline | −0.46 (−0.83 to −0.09) | −0.23 (−0.76 to 0.30) | 0.29 (−0.10 to 0.68) |
| Low exposure group | 2.83 (0.11 to 5.55) | −1.05 (−2.99 to 0.89) | −0.46 (−2.32 to 1.40) |
| High exposure group | 3.15 (0.54 to 5.76) | −0.66 (−2.52 to 1.20) | 0.29 (−1.49 to 2.07) |
| Follow up years * low exposure group | 0.30 (−0.16 to 0.76) | 0.32 (−0.35 to 0.99) | −0.72 (−1.23 to −0.21) |
| Follow up years * high exposure group | 0.50 (0.04 to 0.96) | 0.02 (−1.86 to 1.90) | −0.80 (−1.29 to −0.31) |
| Previous occupational noise | 1.25 (−0.83 to 3.33) | −1.19 (−2.54 to 0.16) | −0.88 (−2.25 to 0.49) |
| Age >30 | 3.92 (1.94 to 5.90) | −1.10 (−2.39 to 0.19) | −2.64 (−3.93 to −1.35) |
| Baseline audiometry (0 = ⩽10, 1 = 10−20, 2 = >20) | 12.40 (11.32 to 13.48) | −3.44 (−4.15 to −2.73) | −5.22 (−5.89 to −4.55) |
| Male gender | 1.26 (−1.23 to 3.75) | −2.31 (−3.94 to −0.68) | −3.47 (−5.12 to −1.82) |