Table 4.
Adjusted odds ratio of hearing loss by frequencies according to the smoking amount in current smoker
| |
1 kHz
*
|
2 kHz
*
|
3 kHz
*
|
4 kHz
*
|
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N | OR † | 95% CI | N | OR † | 95% CI | N | OR † | 95% CI | N | OR † | 95% CI | |
| Smoking amount (pack-years) |
|
|
|
|
|
|
|
|
|
|
|
|
| 0.05-9.9 |
1,125 |
1.000 |
|
1,125 |
1.000 |
|
1,125 |
1.000 |
|
1,125 |
1.000 |
|
| 10-19.9 |
1,413 |
1.562 |
1.013–2.408 |
1,413 |
1.420 |
1.014–1.988 |
1,413 |
1.063 |
0.811–1.393 |
1,413 |
1.034 |
0.815–1.312 |
| 20-29.9 |
689 |
1.557 |
0.990–2.450 |
689 |
1.673 |
1.179–2.374 |
689 |
1.198 |
0.898–1.599 |
689 |
1.228 |
0.945–1.595 |
| ≥30 |
366 |
1.643 |
1.023–2.640 |
366 |
1.660 |
1.143–2.411 |
366 |
1.264 |
0.918–1.742 |
366 |
1.060 |
0.779–1.442 |
| p for trend | 0.263 | 0.197 | 0.314 | 0.387 | ||||||||
* 1 k, 2 kHz: threshold ≥ 30 dBHL included hearing loss group, 3 k, 4 kHz: threshold ≥ 40 dBHL included hearing loss group.
† Adjusted for age, working period, noise level, body mass index, mean arterial pressure, fasting blood glucose, total cholesterol, triglyceride, HDL cholesterol, hemoglobin.