From: Insomnia and hearing impairment among occupational noise exposed male workers
Frequency | Mean ± SD | p-value* | p-value† | |
---|---|---|---|---|
Non insomnia (N = 716) | Insomnia (N = 93) | |||
Left ear | ||||
1 kHz | 14.5 ± 9.8 | 17.7 ± 12.6 | 0.068 | 0.026 |
2 kHz | 17.7 ± 12.6 | 19.8 ± 14.9 | 0.139 | 0.191 |
3 kHz | 27.2 ± 19.2 | 29.5 ± 19.3 | 0.271 | 0.342 |
4 kHz | 33.8 ± 21.2 | 36.5 ± 20.4 | 0.242 | 0.351 |
Right ear | ||||
1 kHz | 13.4 ± 9.0 | 17.9 ± 15.4 | 0.007 | 0.001 |
2 kHz | 15.1 ± 10.8 | 18.5 ± 14.2 | 0.028 | 0.004 |
3 kHz | 25.5 ± 17.9 | 28.1 ± 18.5 | 0.190 | 0.256 |
4 kHz | 32.4 ± 20.9 | 35.6 ± 22.0 | 0.174 | 0.255 |