Age, duration of work, noise and vibration in inducing hearing and balance impairments
Abstract: Noisy and vibrating
bajaj, a public transportation in Jakarta, is a potential risk in inducing
hearing and balance problems. Bajaj drivers in the Jakarta area were chosen by
consecutive sampling and examined medically in the Neurotological Subdivision
of the ENT Department of the Cipto Mangunkusumo Hospital, Jakarta. Hearing and
balance impairments were then diagnosed from audiometric and posturographic
tests. The study was carried out from March 2000 until October 2001. A number
of 350 bajaj drivers participated in this study. There were 97 subjects without
hearing and balance impairments, and 96 subjects suffered from hearing and
balance impairments. Compared to drivers aged less than 40 years, those aged 41
years or more had a four-fold increased risk of developing hearing and balance
impairments [adjusted odds ratio (OR) = 3.90; 95% confidence interval (CI) =
1.67-9.01. Drivers working 9 hours or more a day had an increased risk 2.3
times of developing hearing and balance impairments compared those working less
than 9 hours a day (adjusted OR = 2.32; 95% CI=I.22-4.41). Furthermore, when
compared to those who had been working for 1-5 years, those who had been
working for 5 years had an increased tendency of developing hearing and balance
impairments. Those who had been working 21-30 years had a seven-fold increased
risk of developing hearing and balance impairments (adjusted OR = 7.11; 95% CI
= 1.88-26.92). To minimize hearing and balance impairments bajaj drivers are
recommended to work less than 8 hours a day.
Author: Jenny Bashiruddin
Journal Code: jpkedokterangg050123
Artikel Terkait :
Jp Kedokteran gg 2005
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