Computer-based hearing test and tailored training.
NIOSH 2005 Dec; :1-57
The purpose of this project is to prevent noise-induced hearing loss (NIHL) in operating engineers (OEs), construction workers who operate heavy equipment, by testing the effectiveness of an innovative tailored intervention, along with self-administered audiometric test (SAAT) and immediate feedback on the test results, to increase workers' attention to hearing ability and use of hearing protection. The study has four specific aims: (1) design and test the effectiveness of an innovative intervention for OEs to increase their use of hearing protection devices (HPDs); (2) determine prevalence of hearing loss in OEs; (3) demonstrate the feasibility of providing computer-based SAAT and hearing protection interventions at a construction worker training center; and (4) test and refine the Predictors of Use of Hearing Protection Model (PUHPM), a causal model designed to explain use of HPDs by OEs. To achieve these aims, this project was conducted in three phases, (1 ) Phase I: pre-study development of intervention, (2) Phase 11: intervention study, and (3) Phase III: post-study evaluation of intervention. In Phase I, qualitative data on OEs' perceptions, opinions, and attitudes on use of HPDs were obtained through focus groups to guide development and refinement of an intervention. This intervention and the SAAT was pilot tested and revised as needed. Phase II tested the effectiveness of an individually tailored, interactive, multimedia intervention combined with the SAAT, delivered by computer and contrasted with a control intervention. The experimental group received the tailored intervention based upon the participants' audiometric test results, their responses to questions on current use of HPDs and the theoretically derived predictors of HPD use from the PUHPM. The control group was shown the commercial video on use of HPDs selected for the research team's previous project. The study used an experimental pretest-posttest control group design, with post intervention measures one year following the intervention. Phase III obtained workers' feedback on the SAAT and the tailored intervention. A total of 403 participants who completed both pretest and post test were included in the analyses to determine efficacy of the intervention. The study found significant short-term (immediately after) and limited long-term (a year later) effects of the tailored intervention in increasing use of HPDs in workers. The study also identified limitations that might have contributed to the limited long-term effectiveness of the interventions including frequency of jnterventions (one-shot with 50% chance of one booster), frequency and timing of follow up (FlU) (one FlU at one year, i.e., long delay from intervention to post test), and frequency and format of boosters (one-time mailed one-page letter). Clearly findings from this study have added insights about the seriousness of the NIHL problem the importance of the interventions to promote workers' use of HPDs to protect hearing, application of e-Iearning modality for training worker population, and will inform our continued efforts to develop the most effective behavioral interventions to prevent NIHL in noise exposed workers.
Hearing-loss; Construction-industry; Construction-workers; Occupational-exposure; Noise-exposure; Noise-induced-hearing-loss; Construction-equipment; Machine-operators; Machine-operation; Hearing-protection; Audiometry; Demographic-characteristics; Age-factors; Racial-factors; Sex-factors; Noise-frequencies; Hearing-conservation; Personal-protective-equipment; Personal-protection; Protective-equipment
Health Promotion & Risk Reduction Program, School of Nursing, University of Michigan, 400 N. Ingalls, Room 3182, Ann Arbor, MI 48109-0482, USA
Final Grant Report
Disease and Injury: Hearing Loss
National Institute for Occupational Safety and Health
University of Michigan, Ann Arbor