碩士 / 國防醫學院 / 公共衛生學研究所 / 100 / Background: Among all the military branches, the armed forces who work at noise environment have higher risk of hearing loss including the exposure to impulse noise from firearms and continuous noise from helicopter/ armored vehicles. In recent years, military helicopter noise has become an important issue. The severity of hearing loss or accompanied tinnitus become worse among helicopter pilots due to increasing flight years and exposure to continuous noise levels of up to 100 dB(A) in working environment.
Objective: The aims of the present study are to evaluate the prevalence of hearing impairment and the noise exposures in the army helicopter aircrew environment, and to examine impact of hearing loss and insomnia on mental health simultaneously.
Methods: This cross-sectional study was carried out in 667 military personnel among north and central region in Taiwan. Each participant answered questionnaire about demographic data, life style, medical history, working time in a noisy environment, hearing loss, depression scale,insomnia condition.
Results:With controlling confounding variables, the army helicopter personnel were found hearing loss status correlated with family medical history(OR=2.22) and personnel hearing protective equitment usage(OR=2.79). Wereas in civilian aircrew, personnel hearing protectors usage was only the factor related to hearing loss(OR=2.62). Furthermore, in aircraft machnists, risk factors included family medical history(OR=6.57), hearing protectors(OR=10.35), listening noisy music(OR=6.36), and operating mowing machine(OR=12.27). And hearing impairment related factors in aviators were smoking(OR=4.89), working time per month(OR=1.01), flying year(OR=1.30) and total flight hours (OR=8.95).
Conclusion: This study suggested that smoking cessation, proper usage hearing protectors and avoidance of noisy activities were correlated with hearing loss in the aircrew. Furthermore our results also showed that synergistic effect of hearing loss and insomnia on depression, indicating that mental health need to be concerned at the noisy working environment.
| Identifer | oai:union.ndltd.org:TW/100NDMC0058016 |
| Date | January 2012 |
| Creators | Huang, Wenchun, 黃文君 |
| Contributors | Lin, Fugong, 林富宮 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 163 |
Page generated in 0.0111 seconds