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Document ID (ISN)109750
CIS number 09-672
ISSN - Serial title 0271-3586 - American Journal of Industrial Medicine
Year 2008
Convention or series no.
Author(s) Davies H., Marion S., Teschke K.
Title The impact of hearing conservation programs on incidence of noise-induced hearing loss in Canadian workers
Bibliographic information Dec. 2008, Vol.51, No.12, p.923-931. Illus. 21 ref.
Abstract The effectiveness of hearing conservation programmes in preventing occupational noise-induced hearing loss was examined in a group of Canadian lumber mill workers, using annual audiogram series obtained from the Workers' Compensation Board of British Columbia for the period 1979-1996 and subjecting the data to Cox proportional hazard models. Mean cumulative noise exposure was 98.1 dB-years. The audiograms from 22,376 individuals, among whom there were 2,839 threshold shifts of 10 dB or greater were retained in multivariable analyses. After adjusting for potential confounders, continuous use of hearing protection, and initial hearing tests later in the study period, the risk of a 10-dB threshold shift was reduced by 30%. Risk remained high, however, among those with the highest noise exposure.
Descriptors (primary) British Columbia; logging; risk factors; hearing loss
Descriptors (secondary) Canada; exposure evaluation; statistical evaluation; noise dosimetry; programme evaluation
Document type D - Periodical articles
Country / State or ProvinceCanada
Subject(s) Occupational pathology
Noise, hearing and vibration
Broad subject area(s) Physical hazards
Browse category(ies) Forestry and logging
Diseases of the ear and hearing damage