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Wahrnehmung der subjektiven Höranstrengung bei unterschiedlichen Hörgeräteversorgungen ...
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Indication criteria for cochlear implants and hearing aids: impact of audiological and non-audiological findings
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Utility and Importance of Hearing-Aid Features Assessed by Hearing-Aid Acousticians
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Abstract:
Modern hearing instruments include many features addressing situation-specific and user-related amplification. The main tasks of the acoustician are the appropriate choice of hearing instruments and fitting them to hearing impaired individuals. This study aims at investigating the utility and importance of several hearing-aid features as assessed by hearing-aid acousticians. For this purpose, eight different hearing-aid features with three levels each are addressed in a discrete-choice experiment. Preferences for systematically varied combinations of the features are assessed with 143 acousticians, using an adaptive conjoint analysis conducted via the Internet. Based on the preference data, utility and importance of the features are calculated. Highest utility and importance are found for noise cancellation and directional microphones. Outcome of these two features do not differ significantly. In contrast, data management functions, that is, self-learning options, show lowest importance. Though the acousticians' professional experience reveal statistically significant influence on the assessment of some of the features' utility and importance, a clear impact of sociodemographic or subject-specific factors on the outcome cannot be found. The study can be seen as a first approach to determine the estimation of basic hearing-aid features assessed by acousticians. Results show the outstanding utility and importance of features addressing speech perception in adverse listening situations. Furthermore, the outcome reveals reservations of the acousticians regarding self-learning options of the instruments.
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URL: https://doi.org/10.1177/1084713810385713
http://www.ncbi.nlm.nih.gov/pubmed/21109550
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4111467
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