A cross-over, double-blind comparison of the NAL-NL1 and the DSL v4.1 prescriptions for children with mild to moderately severe hearing loss

International Journal of Audiology
Teresa Y C ChingR C Seewald

Abstract

The relative effectiveness of the NAL-NL1 and the DSL4.1 prescriptions for 48 children with mild to moderately severe hearing loss was studied using a double-blind, four-period, two-treatment cross-over design in Australia and in Canada. Evaluations included speech perception tests, loudness ratings, reports from parents and teachers on functional performance in real life, children's self-reports, paired-comparison judgements of intelligibility, and children's preferences in real-world environments. Electroacoustic measures of hearing aids revealed that gain differences dominated the comparison. Across trials and measures, individual Australian children consistently preferred either the NAL-NL1 or the DSL v.4.1 prescription. An overall figure of merit (FOM), calculated by averaging the standardized difference scores between prescriptions for all measures, revealed that the strongest prescription-related differences were found in Australia. On average, an advantage and preference for the NAL-NL1 prescription was associated with lesser degrees of hearing loss. This research provides evidence on the effectiveness of the NAL-NL1 and DSL v.4.1 prescriptions, and highlights the need for evaluating and fine-tuning amplification to mee...Continue Reading

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Citations

Jan 1, 2013·CoDAS·Adriane Lima Mortari MoretRegina Tangerino de Souza Jacob
Dec 4, 2012·Trends in Amplification·Gitte KeidserAnna O'Brien
Jul 12, 2017·Ear and Hearing·Josephine E MarriageBrian C J Moore
Sep 11, 2013·American Journal of Audiology·Jeffery Crukley, Susan D Scollie
Jul 27, 2017·American Journal of Audiology·Sheila T F MoodieKelley Keene
May 16, 2014·Journal of Speech, Language, and Hearing Research : JSLHR·In-Ki JinKathryn H Arehart
Aug 1, 2012·American Journal of Audiology·Hashir AazhDeepak Prasher
Jan 30, 2010·International Journal of Audiology·Susan ScollieJoseph Corcoran
Jan 30, 2010·International Journal of Audiology·Teresa Y C Ching
Jun 4, 2018·Journal of Medical Systems·S RajkumarS S Vignesh

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