Twenty-two experienced hearing aid users from the general Bay Pines VA Healthcare System audiology clinic population were randomized into one of two intervention groups.Īt the first visit, half of the participants were fit with new hearing aids via the manufacturer's initial fit while the second half were fit to a verified prescription using probe-microphone measurement. Each of the two fittings included probe-microphone measurement.Ī counterbalanced, cross-over, repeated-measures, single-blinded design was utilized to address the research objectives. The prescriptive fit began at NAL-NL1 targets, with adjustments based on participant request. The present study examined whether self-perception of hearing aid benefit, as measured through the Abbreviated Profile of Hearing Aid Benefit (APHAB Cox and Alexander, 1995), differed as a function of hearing aid fitting method, specifically, manufacturer's initial-fit approach versus a verified prescription. Despite evidence suggesting inaccuracy in the default fittings provided by hearing aid manufacturers, the use of probe-microphone measures for the verification of fitting accuracy is routinely used by fewer than half of practicing audiologists.
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