Comparing outcomes of ultra-low-cost hearing aids to programmable, refurbished hearing aids for adults with high frequency hearing loss in Malawi: A feasibility study

Abstract

Introduction Access to ear and hearing health services are limited or non-existent in low-income countries, with less than 10% of the global production of hearing aids is distributed to this population. The aim of this feasibility study was to compare the outcomes of an ultra-low-cost hearing aid (LoCHAid) to programmable, refurbished hearing aids for adults with high-frequency hearing loss, in Blantyre, Malawi. Methods Sixteen adults with high frequency hearing loss, and no prior experience of hearing aids, took part in this study, nine were fitted with the LoCHAid and seven were fitted with refurbished, programmable hearing aids, for a one-month trial. Five standardized hearing qualities questionnaires were used to compare outcomes pre and post device fitting and between devices. Questionnaire scales were analysed using general linear models and inductive thematic analysis was used to evaluate qualitative data. Results Overall, there was no significant difference found between LoCHAid and refurbished hearing aids, and the two device types each showed a similar degree of improvement after fitting. Qualitative data identified two key themes: Sound Quality and User experience. Conclusion The results from this feasibility study are encouraging, but a comprehensive, larger clinical study is needed to draw firm conclusions about the LoCHAids performance. This study has identified key improvement indicators required to enhance sound quality and user experience of the LoCHAid.

Impacts and Identification of Hearing Aid Refurbishing Programs for People with Hearing Loss: A Scoping Review

“…Another disadvantage which is mentioned in the literature is that the characteristics of refurbished HAs may not be appropriate to the needs of all clients with hearing loss. For example, most refurbished HAs are behind-the-ear (BTE) HAs [ 25 ]. Used in-the-ear (ITE) HAs can be refurbished, but the process is more expensive, and so, they are usually only used for spare parts [ 20 , 22 ].…”

“…Used in-the-ear (ITE) HAs can be refurbished, but the process is more expensive, and so, they are usually only used for spare parts [ 20 , 22 ]. Additionally, it may be difficult to find a refurbished HA appropriate for severe or profound hearing losses, as few of these models may be donated [ 25 ].…”

“…To fit HAs responsibly in a developing country, the author suggests to: (1) only fit people who can benefit from a HA, (2) fit HAs according to evidence-based practices, (3) ensure that follow-up care is available and provided either locally or, at a minimum, through annual visits by an outside team, (4) offer education and training for patients as well as teachers and parents who help taking care for the HA. The program is operated in partnership with Sound Seekers and EARS Inc. Parmar [ 25 ] UK Review Not mentioned n/a Sound Seekers operate in Malawi, Zambia, Gambia, Sierra Leone, and Cameroon. HAs are collected in the UK, and are then shipped to Zambia to be refurbished.…”