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Comparing criteria for deviation from hearing aid prescriptive targets in children
Journal article   Peer reviewed

Comparing criteria for deviation from hearing aid prescriptive targets in children

Kathryn B Wiseman, Elizabeth A Walker, Meredith Spratford, Marc Brennan and Ryan W McCreery
International journal of audiology, Vol.63(12), pp.997-1008
12/2024
DOI: 10.1080/14992027.2023.2293645
PMCID: PMC11199377
PMID: 38147879
url
https://pmc.ncbi.nlm.nih.gov/articles/PMC11199377/pdf/nihms-1956425.pdfView
Open Access

Abstract

To determine if a stricter criterion for paediatric hearing aid fitting for proximity of fit-to-target of <3 dB root-mean-square (RMS) error produces better audibility and outcomes compared to the current <5 dB criterion, and to examine the relationship between aided audibility and RMS error by degree of hearing loss. We evaluated the influence of unaided hearing level on the relationship between RMS error and aided audibility. We assessed the effect of RMS error category (<3, 3-5, >5 dB) on aided audibility, speech recognition, expressive vocabulary, and morphosyntax. The study included 2314 hearing aid verification measurements from 307 children with hearing aids. Children who met a <3 dB criterion had higher aided audibility than children who met no criterion (>5 dB error). Results showed no differences in speech recognition or vocabulary by error category, but children with <3 dB error demonstrated better morphosyntax than children with 3-5 and >5 dB RMS error. Fittings that are close to prescriptive targets provide a more positive outcome for children with hearing aids. Using probe microphone measures to adjust hearing aids to within 3 dB may benefit language abilities in children.
SII prescriptive targets RMS error hearing aids children

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