Predicting individual hearing-aid preference in the field using laboratory paired comparisons
Resumé
Two gain settings were compared in two hearing-aid programs. Twenty participants with impaired hearing evaluated the settings during a two-week field trial period using a double-blind design. During the field test, the participants used a diary to report which program they preferred in various self-selected situations. After the field trial, the participants stated their overall preferred setting in an interview and answered questions about their preferred settings in various predefined sound scenarios. In the laboratory, the participants made paired comparisons of preference, speech intelligibility, comfort, and loudness. The analysis focused on whether the laboratory test could predict the results obtained in the field. On a group level, it looked as if the results from the diary and questionnaire (data from the field) agreed well with the laboratory paired comparisons. However, on an individual level, the laboratory paired comparisons were not effective in predicting real-life preference. Potential reasons for this result and the consequences of the result are discussed.
Referencer
Amlani, A.M. and Schafer, E.C. (2009). “Application of paired-comparison methods to hearing aids,” Trends Amplif., 13, 241-259.
Kissner, S., Holube, I., and Bitzer, J. (2015). “A smartphone-based, privacy-aware recording system for the assessment of everyday listening situations,” In Proc. ISAAR 2015: Individual Hearing Loss – Characterization, Modelling, Compensation Strategies. 5th International Symposium on Auditory and Audiological Research, Nyborg, Denmark. Eds. S. Santurette, T. Dau, J.C. Dalsgaard, L. Tranebjærg, T. Andersen, and T. Poulsen. ISBN 978-87-990013-5-4. The Danavox Jubilee Foundation, 2015.
Kuk, F.K. (2002). “Paired-comparisons as a fine-tuning tool in hearing aid fitting,” in Strategies for selecting and verifying hearing aid fittings, 2nd ed. Ed. M. Valente, New York, NY, USA: Thieme medical publishing, pp. 125-150.
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