Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.
From the 2006 National Health Interview Survey:
Have you ever worn a hearing aid?
A hearing aid is an electronic device that brings amplified sound to the ear, usually consisting of a microphone, amplifier, and receiver. A cochlear implant is a medical device that bypasses damaged structures in the inner ear and directly stimulates the auditory nerve, allowing some deaf individuals to hear and to maintain or develop speech and language.
Assistive devices are technical tools and devices used to aid individuals who have communication disorders in performing actions, tasks, and activities. Examples include alphabet boards, text telephones (TT/TTY/TTD), and text-to-speech conversion software.
The numerator for this measure, adults aged 70 years or older who respond that they have ever worn a hearing aid, is obtained annually from the National Health Interview Survey (NHIS); the denominator, adults aged 70 years or older who testing as having hearing loss in either ear, is obtained from the 2005–06 National Health and Nutrition Examination Survey (NHANES).
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