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Document ID (ISN)78122
CIS number 02-395
ISSN - Serial title 0037-5675 - Singapore Medical Journal
Year 1999
Convention or series no.
Author(s) Lee L.T.
Title A study of the noise hazard to employees in local discotheques
Bibliographic information 1999, Vol.40, No.9, p.571-574. 26 ref.
Abstract The purpose of this study was to evaluate the noise hazard of employees exposed to amplified music in discotheques. Personal noise dosimetry was carried out on 40 employees (disc jockeys, bartenders, waiters, cashiers and security officers) of 5 discotheques. Audiometric examination results of another 46 employees were compared with 37 subjects from a non-exposed matched control group. The range of exposure to noise level above 85dBA for the employees was 3.6 to 6.9 hours with a mean of 5.1 hours. The discotheque group had statistically significant higher prevalence (41.9%) of early hearing loss compared to the control group (13.5%). A higher proportion of employees in the older age group (above 30 years old) and working longer (above 1 year) suffered from hearing loss. A significant proportion of the discotheque study subjects (21%) also complained of recurrent tinnitus compared to 2.7% in the control group. The younger workers (< 30 years) and those with shorter exposure duration (< 1 year) appeared to complain of tinnitus more.
Descriptors (primary) waiters, waitresses and bartenders; exposure evaluation; hearing loss; noise
Descriptors (secondary) Singapore; tinnitus; audiometric tests; age-linked differences; noise level measurement; noise dosimetry
Document type D - Periodical articles
Country / State or ProvinceSingapore
Subject(s) Noise, hearing and vibration
Broad subject area(s) Physical hazards
Browse category(ies) Diseases of the ear and hearing damage
Exposure evaluation