PMID: 15224866Jul 1, 2004Paper

Clinical trial of a low-cost, solar-powered hearing aid

Acta Oto-laryngologica
A Parving, B Christensen

Abstract

In July 2001 the World Health Organization (WHO) launched their "Guidelines for hearing aids and services for developing countries". The objective of this study was to evaluate the clinical outcome of an analogue, low-cost, behind-the-ear hearing aid (BTE-HA) that met the minimum technical requirements outlined by the WHO. A total of 25 subjects (17 males, 8 females; median age 74 years; range 50-86 years) were recruited among patients referred for audiological evaluation who consented to participate in the trial. All subjects had a hearing loss of < or = 60 dB HL at 2 kHz, were mobile and mentally unimpaired; 13 were experienced users of HAs, 3 suffered from mixed conductive/sensorineural hearing impairment (HI) and the remainder had pure sensorineural HI. Based on pure-tone, speech and impedance audiometry the BTE-HAs were fitted, using the National Acoustic Laboratories-R (NAL-R) prescription rule, 21 binaurally and 4 monaurally. All fittings were validated by insertion gain measurements, and the immediate benefit was measured by means of the speech recognition score in background noise (SRSN; signal:noise ratio = 10 dB) without and with the HA. After a 6-week trial period a structured interview based on the International Ou...Continue Reading

References

Jan 1, 1991·Scandinavian Audiology·A Parving
Jun 1, 1994·British Journal of Audiology·P Sibelle, A Parving
Dec 7, 2002·International Journal of Audiology·Robyn M Cox, Genevieve C Alexander

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Citations

Aug 21, 2010·Trends in Amplification·Ricardo Ferreira Bento, Silvio Pires Penteado
Aug 9, 2016·Disability and Rehabilitation. Assistive Technology·Björn Ekman, Johan Borg
Jun 3, 2017·Disability and Rehabilitation. Assistive Technology·Johan BorgPer-Olof Östergren
Dec 7, 2011·Trends in Amplification·Elizabeth ConveryLisa Hartley
Apr 8, 2014·Disability and Rehabilitation. Assistive Technology·Bradley McPherson
Jan 31, 2014·International Journal of Audiology·Charlotte Thunberg JespersenJonas Vester Legarth
Jun 4, 2008·American Journal of Audiology·Susanna Løve Callaway, Jerry L Punch

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