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Trends in Amplification, Vol. 12, No. 2, 121-136 (2008)
DOI: 10.1177/1084713808316976

A Multicenter Trial of an Assess-and-Fit Hearing Aid Service Using Open Canal Fittings and Comply Ear Tips

Pauline Smith, MSc

MRC Hearing and Communication Group, University of Manchester, Manchester, Hearing Services Department, Leicester Royal Infirmary, Leicester, pauline.smith{at}uhl-tr.nhs.uk

Angela Mack, MSc

MRC Hearing and Communication Group, University of Manchester, Manchester, Audiology Department, Royal Bolton Hospital, Bolton United Kingdom

Adrian Davis, PhD

MRC Hearing and Communication Group, University of Manchester, Manchester

Large potential benefits have been suggested for an assess-and-fit approach to hearing health care, particularly using open canal fittings. However, the clinical effectiveness has not previously been evaluated, nor has the efficiency of this approach in a National Health Service setting. These two outcomes were measured in a variety of clinical settings in the United Kingdom. Twelve services in England and Wales participated, and 540 people with hearing problems, not previously referred for assessment, were included. Of these, 68% (n = 369) were suitable and had hearing aids fitted to NAL NL1 during the assess-and-fit visit using either open ear tips, or Comply ear tips. The Glasgow Hearing Aid Benefit Profile was used to compare patients fitted with open ear tips with a group of patients from the English Modernization of Hearing Aid Services evaluation, who used custom earmolds. This showed a significant improvement in outcome for those with open ear tips after allowing for age and hearing loss in the analysis. In particular, the benefits of using bilateral open ear tips were significantly larger than bilateral custom earmolds. This assess-and-fit model showed a mean service efficiency gain of about 5% to 10%. The actual gain will depend on current practice, in particular on the separate appointments used, the numbers of patients failing to attend appointments, and the numbers not accepting a hearing aid solution for their problem. There are potentially further efficiency and quality gains to be made if patients are appropriately triaged before referral.

Key Words: hearing aids • open canal fitting • ear tips • assess and fit


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