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Test of the assumptions underlying comparative hearing aid evaluations
The Journal of Speech and Hearing Disorders
|August 1, 1983
Summary
When comparing hearing aids, electroacoustically different devices show more performance differences. Standard word lists may not detect subtle hearing aid benefits, and patient adjustment impacts results.
Area of Science:
- Audiology
- Hearing Science
- Biomedical Engineering
Background:
- Sensorineural hearing impairment affects high-frequency hearing.
- Hearing aid evaluations are crucial for patient benefit.
- Standardized tests assess hearing aid performance.
Purpose of the Study:
- To compare hearing aid performance using electroacoustically similar and different devices.
- To assess the reliability of monosyllabic word lists in hearing aid evaluations.
- To determine if initial evaluations predict long-term communication success.
Main Methods:
- Adults with high-frequency sensorineural hearing loss participated.
- Comparative hearing aid evaluations used NU-6 monosyllabic word lists.
- Participants underwent trial-use periods and ranked hearing aids.
Main Results:
- Electroacoustically heterogeneous hearing aids revealed significant performance differences more often.
- Standard word lists may lack sensitivity for detecting typical inter-aid differences.
- Initial evaluations are poor predictors of daily communication success without large performance disparities.
Conclusions:
- Hearing aid evaluation methods should consider electroacoustic properties.
- Patient adjustment and time influence perceived hearing aid benefit.
- More sensitive outcome measures may be needed for comprehensive hearing aid assessment.