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Risk factors for presbycusis in a socio-economic middle-class sample
Cláudia Simônica de Sousa1, Ney de Castro Júnior, Erkki Juhani Larsson
1Medical School, FCM of the Sta Casa de S Paulo, Brazil.
Brazilian Journal of Otorhinolaryngology
|September 29, 2009
Summary
Presbycusis (age-related hearing loss) affects 36.1% of adults over 40. Key risk factors include age, male gender, diabetes mellitus, and hereditary hearing loss, not smoking or alcohol.
Area of Science:
- Audiology
- Gerontology
- Otolaryngology
Background:
- Presbycusis, or age-related hearing loss, primarily impacts the inner ear and cochlear nerve, leading to sensorineural hearing loss.
- Systemic diseases and lifestyle habits are potential contributors to inner ear damage and presbycusis.
- Identifying risk factors is crucial for developing effective prevention strategies for presbycusis.
Purpose of the Study:
- To determine the prevalence of presbycusis in individuals over 40 years of age.
- To identify significant risk factors associated with the development of presbycusis in the studied population.
Main Methods:
- A retrospective case series design was employed.
- Evaluation of medical records for 625 patients aged 40 and above.
- Presbycusis diagnosis confirmed through pure tone audiometry, speech audiometry, and impedance testing.
Main Results:
- The prevalence of presbycusis was found to be 36.1%.
- The average age of affected individuals was 50.5 years, with males comprising 85.5% of the cases.
- Identified risk factors included advanced age, male gender, diabetes mellitus, and a history of hereditary hearing loss.
Conclusions:
- This study identified specific risk factors for presbycusis, differing from commonly assumed causes.
- Despite the common belief in multiple contributing factors, only a few were statistically significant in this cohort.
- Further research may be needed to fully elucidate the complex etiology of age-related hearing loss.
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