biostudies-literatureHumes LENIDCD NIH HHS53-79https://www.ebi.ac.uk/biostudies/studies/S-EPMC5597084biostudies-literatureUnknown26(1)<h4>Objectives</h4>The objectives of this study were to determine efficacy of hearing aids in older adults using audiology best practices, to evaluate the efficacy of an alternative over-the-counter (OTC) intervention, and to examine the influence of purchase price on outcomes for both service-delivery models.<h4>Design</h4>The design of this study was a single-site, prospective, double-blind placebo-controlled randomized trial with three parallel branches: (a) audiology best practices (AB), (b) consumer decides OTC model (CD), and (c) placebo devices (P). Outcome measures were obtained after a typical 6-week trial period with follow-up 4-week AB-based trial for those initially assigned to CD and P groups.<h4>Setting</h4>Older adults from the general community were recruited via newspaper American journal of audiologyThe Effects of Service-Delivery Model and Purchase Price on Hearing-Aid Outcomes in Older Adults: A Randomized Double-Blind Placebo-Controlled Clinical Trial.PMC5597084R01 DC011771Main AKRogers SEKinney DLHerring CQuigley TMHumes LEfalseThe Effects of Service-Delivery Model and Purchase Price on Hearing-Aid Outcomes in Older Adults: A Randomized Double-Blind Placebo-Controlled Clinical Trial.<h4>Objectives</h4>The objectives of this study were to determine efficacy of hearing aids in older adults using audiology best practices, to evaluate the efficacy of an alternative over-the-counter (OTC) intervention, and to examine the influence of purchase price on outcomes for both service-delivery models.<h4>Design</h4>The design of this study was a single-site, prospective, double-blind placebo-controlled randomized trial with three parallel branches: (a) audiology best practices (AB), (b) consumer decides OTC model (CD), and (c) placebo devices (P). Outcome measures were obtained after a typical 6-week trial period with follow-up 4-week AB-based trial for those initially assigned to CD and P groups.<h4>Setting</h4>Older adults from the general community were recruited via newspaper 2017-01-01T00:00:00Z2017 Mar2026-05-02T02:55:46.337Z2026-04-07T17:35:51.759ZS-EPMC55970842825216010.1044/2017_AJA-16-0111