Survey of hearing disorders in an urban population in Rondonia, Northern Brazil

Inquérito de perdas auditivas em população urbana, Rondônia, Brasil

Pesquisa de pérdidas auditivas en población urbana, Rondonia, Brasil

Maria Cecilia Bevilacqua Marcos Roberto Banhara Ariádnes Nóbrega de Oliveira Adriane Lima Mortari Moret Kátia de Freitas Alvarenga Magali de Lourdes Caldana Luís Marcelo Aranha Camargo Orozimbo Alves Costa José Roberto de Magalhães Bastos About the authors

OBJECTIVE:

To identify the prevalence of hearing loss for the population in the urban area.

METHODS:

A cross-sectional household survey based on the World Health Organization Ear and Hearing Disorders Survey Protocol was conducted in 298 households in the urban area of Monte Negro, Rondonia, Northern Brazil, from 2005 to 2007. Ear examinations, behavioral audiometry and pure tone audiometry were conducted on 577 individuals.

RESULTS:

The results showed that 3.8% (95%CI 2.17;5.45) of population were classified in the disabling hearing impairment category. The prevalence of moderate hearing impairment was 3.4%; severe impairment was 0.4%; and profound hearing impairment was not found.

CONCLUSIONS:

The impairing hearing loss prevalence found in this study is within of the international prevalence for this level of hearing loss and smaller than observed in a previous study in the South region of Brazil.

Hearing Loss, epidemiology; Urban Zones; Cross-Sectional Studies


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