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CISDOC database

Document ID (ISN)61643
CIS number 94-360
ISSN - Serial title 0271-3586 - American Journal of Industrial Medicine
Year 1993
Convention or series no.
Author(s) Lee-Feldstein A.
Title Five-year follow-up study of hearing loss at several locations within a large automobile company
Bibliographic information July 1993, Vol.24, No.1, p.41-54. Illus. 30 ref.
Abstract This longitudinal epidemiologic study was designed to investigate hearing loss over a five-year period among noise-exposed employees of a large automobile company and to assess effectiveness of hearing conservation programmes at locations representing a large spectrum of operations. Methodology based on computerized audiometric test data was developed for measuring occupational hearing loss and evaluating programmes at these locations, which had maximal 8-hr time-weighted average (TWA) noise exposures of 104-110dB(A). The methods take account of age and hearing level of study subjects at baseline audiogramme and clearly demonstrate the extent of hearing loss during the study period. Among five study locations, the average hearing loss at 2,000-4,000Hz in the worst-loss ear ranged from 3.4 to 6.2dB over the follow-up period after adjustment for presbycusis, the loss was less than 2dB at all but one location, which showed a loss of nearly 4dB. Hearing conservation programmes at four of the five locations were judged to be effective.
Descriptors (primary) noise; hearing loss; expertise; motor vehicle industry; exposure evaluation
Descriptors (secondary) epidemiologic study; programme evaluation; cohort study
Document type D - Periodical articles
Country / State or ProvinceUSA
Subject(s) Occupational pathology
Broad subject area(s) Physical hazards
Browse category(ies) Diseases of the ear and hearing damage
Workers' compensation
Motor vehicle manufacturing industry
Noise
Exposure evaluation