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P M Rabinowitz

Publications and source records attributed to P M Rabinowitz.

6 recordsLinked to original sources
PubMed2006

Do ambient noise exposure levels predict hearing loss in a modern industrial cohort?

BACKGROUND: Much of what is known about the exposure-response relationship between occupational noise exposures and hearing loss comes from cross-sectional studies conducted before the widespread implementation of workplace hearing conservation programmes. Little is known about the current relationship of ambient noise exposure measurements to hearing loss risk. AIM: To examine the relationship between rates of high frequency hearing loss and measured levels of noise exposure in a modern industrial workforce. METHODS: Ten-year hearing loss rates were determined for 6217 employees of an aluminium manufacturing company. Industrial hygiene and human resources records allowed for reconstruction of individual noise exposures. Hearing loss rates were compared to ANSI 3.44 predictions based on age and noise exposure. Associations between hearing loss, noise exposure, and covariate risk factors were assessed using multivariate regression. RESULTS: Workers in higher ambient noise jobs tended to experience less high frequency hearing loss than co-workers exposed at lower noise levels. This trend was also seen in stratified analyses of white males and non-hunters. At higher noise exposure levels, the magnitude of hearing loss was less than predicted by ANSI 3.44 formulae. There was no indication that a healthy worker effect could explain these findings. The majority of 10 dB standard threshold shifts (STS) occurred in workers whose calculated ambient noise exposures were less than or equal to 85 dBA. CONCLUSIONS: In this modern industrial cohort, hearing conservation efforts appear to be reducing hearing loss rates, especially at higher ambient noise levels. This could be related to differential use of hearing protection. The greatest burden of preventable occupational hearing loss was found in workers whose noise exposure averaged 85 dBA or less. To further reduce rates of occupational hearing loss, hearing conservation programmes may require innovative approaches targeting workers with noise exposures close to 85 dBA.

Adult↗
PubMed2000

Noise-induced hearing loss.

Hearing loss caused by exposure to recreational and occupational noise results in devastating disability that is virtually 100 percent preventable. Noise-induced hearing loss is the second most common form of sensorineural hearing deficit, after presbycusis (age-related hearing loss). Shearing forces caused by any sound have an impact on the stereocilia of the hair cells of the basilar membrane of the cochlea; when excessive, these forces can cause cell death. Avoiding noise exposure stops further progression of the damage. Noise-induced hearing loss can be prevented by avoiding excessive noise and using hearing protection such as earplugs and earmuffs. Patients who have been exposed to excessive noise should be screened. When hearing loss is suspected, a thorough history, physical examination and audiometry should be performed. If these examinations disclose evidence of hearing loss, referral for full audiologic evaluation is recommended.

Adolescent↗
PubMedDate not supplied

Is acculturation related to use of hearing protection?

Noise-exposed employees with limited English skills may pose a special challenge for hearing conservation programs. This pilot field study assessed knowledge, attitudes, and behavior regarding use of hearing protective devices in a largely Hispanic group of 88 workers exposed to industrial noise. Effectiveness of hearing protection was determined through field measurements of personal attenuation ratings. Individual scores on an acculturation scale (first language learned, language at home, degree of literacy in English, preferred language) demonstrated a correlation between a low degree of acculturation and low personal attenuation rating (R2= 0.49, p=0.0001). Low acculturation was also correlated with high-perceived barriers to use of hearing protection (p=0.006). Although neither self reports of self-efficacy nor perceived benefits of hearing protection correlated with personal attenuation rating, perceived barriers to hearing protector use was a significant predictor of hearing protector fit (p=0.05). These results indicate that less acculturated workers may be underutilizing hearing protection in the workplace partly due to perceived barriers to use of hearing protective devices. To be effective, hearing conservation training programs in work sites with an immigrant work force need to address language and cultural barriers to the use of hearing protection.

Acculturation↗