Hearing Aids Use in Elderly: Efficacy in Speech Perception and in Health-related Quality of Life

Background: Prevalence of hearing loss increases over age; its estimated prevalence is 40-50% in people older than 75 years. Recent studies agree that modification in the hearing threshold contributes to deterioration in sociality, sensitivity, cognition, and quality of life of the elderly subjects. Our study objective is to verify if rehabilitation with first time applied Hearing Aids (HA) in a cohort of old people with hearing impairment improves over time speech perception in a noisy environment and the overall health-related quality of life. Methods: The monocentric, prospective, repeated measures, single-subject, clinical observational study will accrue 100 elderly, first-time HA recipients (≥ 65 years). The evaluation protocol is designed to analyze changes on specific measurement tools a year after the first HA fitting in comparison to the evaluation before HA usage. Evaluations will consist of multiparametric details collected through self-report questionnaires completed by the recipients and a series of commonly used audiometric measures and geriatric assessment tools. The primary indicator of changes in speech perception in noise will be the OLSA test whereas the indicator of changes in overall quality of life will be the AQoL and HHEI questionnaires. Montreal Cognitive Assessment (MoCA) will help us to verify the cognitive state of the subjects. This questionnaire will allow us to exclude a reduction of the cognitive abilities over time. Discussion: The protocol is designed to make use of measurement tools that have already been applied to the hearing-impaired population in order to compare the effects of HA rehabilitation in the elderly immediately before their first HA usage (Pre) and after gaining 1 year of experience (Post). The broad approach will lead to a greater understanding of how useful hearing influences the quality of life in elderly individuals, and thus improves potentials for healthy aging. Outcomes will be described and analyzed in de