From: Interaction of smoking and occupational noise exposure on hearing loss: a cross-sectional study
Workers aged 40 or less | Workers older than 40 | |||||||
---|---|---|---|---|---|---|---|---|
Smokers (n = 65) | Non smokers (n = 88) | P value | Odds (%95CI) | Smokers (n = 141) | Non smokers (n = 118) | P value | Odds (%95CI) | |
Diff. 4k-1k1 n (%) | 17 (26.2) | 3 (3.4) | < 0.001 | 10(2.8–36) | 85 (60.3) | 20 (16.9) | < 0.001 | 7.4(4.1–13.4) |
> 25 dB at 4k2 n (%) | 23 (35.4) | 6 (6.8) | < 0.001 | 7.5(2.8–9.8) | 108 (76.6) | 32 (27.1) | < 0.001 | 8.8(5–15.4) |
4k mean3 (SD) | 24.5 (14.9) | 12.2 (10.1) | < 0.001 | ---- | 38.5 (15.2) | 19.5 (12.9) | < 0.001 | ---- |