Bibliographic Details
| Title: |
Efficacy and Effectiveness of Evidence-Based Non--Self-Fitting Presets Compared to Prescription Hearing Aid Fittings and a Personal Sound Amplification Product. |
| Authors: |
Venkitakrishnan, Soumya1 s.venkitakrishnan@csus.edu, Urbanski, Dana2, Yu-Hsiang Wu3 |
| Source: |
American Journal of Audiology. Mar2024, Vol. 33 Issue 1, p31-54. 24p. |
| Subject Terms: |
*HEARING aid fitting, *STATISTICS, *ASSISTIVE listening systems, *AUDITORY perception, *HEARING aids, *SENSORINEURAL hearing loss, *CONSUMER attitudes, *PRODUCT design, *RANDOMIZED controlled trials, *COMPARATIVE studies, *INCOME, *COMMERCIAL product evaluation, *BLIND experiment, *DESCRIPTIVE statistics, *RESEARCH funding, *QUESTIONNAIRES, *STATISTICAL sampling, *CROSSOVER trials, *DATA analysis |
| Abstract: |
Purpose: In this study, we compare the efficacy and effectiveness of gain--frequency responses of evidence-based presets developed by our lab for overthe-counter hearing aids to conventional National Acoustic Laboratories' nonlinear fitting procedure, version 2 (NAL-NL2) gain--frequency response and to gain--frequency response of a personal sound amplification product (PSAP). We hypothesized that the hearing aids with our presets would perform better than a PSAP with poor frequency response and comparably to the hearing aid with NAL-NL2 frequency response. Method: We used a single-blinded, randomized cross-over design to compare audibility, speech recognition, sound quality, listening effort, and subjective preferences in 37 participants in laboratory settings and following field trials. Results: The presets developed in our lab showed comparable outcomes to the hearing aids with NAL-NL2 gain--frequency response in most measured domains. Performance with the presets was better than the PSAP gain-- frequency response in the domains of listening effort and sound quality in laboratory testing and speech recognition in our real-world measures. We also found that most participants (54.05%) preferred our presets over the PSAPs and were willing to pay significantly more to purchase the hearing aids with our presets. Conclusion: Our evidence-based presets have better outcomes than a PSAP with a single, poorly suited frequency response while performing comparably to the clinical best-practice National Acoustic Laboratories condition. [ABSTRACT FROM AUTHOR] |
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| Database: |
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