Skip to main content

Table 2 Comparisons of pure tone audiometry threshold according to insomnia

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
  1. * p-value was calculated by Student t-test
  2. p-value was calculated by analysis of covariance and adjusted for age, working period, noise level, snoring, protection device use, hypertension, diabetes mellitus, smoking, alcohol consumption, regular exercise, total cholesterol, triglyceride, HDL cholesterol and waist circumference