Background: Age-related hearing loss (ARHL) is a common and irreversible condition that has been recently associated with cognitive decline and dementia. Hence, if ARHL is treated earlier, the risk of dementia might decrease. However, in China, only 0.8% of older adults with hearing loss wore hearing aids, and over two-thirds (67.5%) of older adults with ARHL in Hong Kong had either been formally diagnosed or treated. There is also limited information on the feasibility and efficacy of hearing loss interventions for older people in Hong Kong. It is important to develop hearing loss interventions that have the potential to improve cognitive functions among older people. Aims: This study aims to assess the feasibility and acceptability of a new auditory-cognitive dual-task intervention (ACDT) for community-dwelling older adults with hearing loss, and to examine the preliminary efficacy of ACDT on their cognitive function. Study design and Methods: This is mixed-model design, using a 2-arm, parallel-group, single-blinded, pilot randomized controlled trial (pilot RCT). A total of 60 community-dwelling older adults in Hong Kong who have mild to moderate hearing loss and normal cognitive performance will be recruited. Participants will be randomly assigned to the auditory-cognitive dual-task intervention group (ACDTG), and control group with no specific intervention (a "wait list" group) (CG). Each ACDTG participant will receive the intervention for 12 weeks (5 days x 60-min sessions per day). All participants in all groups will be assessed for cognitive function (primary outcome), social isolation, and loneliness, and hearing at baseline (T0), and after the intervention (T1). Post-intervention interviews will be conducted to obtain perspectives of participants in the ACDTG on the feasibility and acceptability of the ACDT intervention. Data analysis: Participant characteristics and outcome variables will be analysed through descriptive statistics. Differences in cognition score and other outcomes across time points among the participant groups will be measured by Generalized Estimating Equations (GEE). The statistical software package IBM SPSS version 26.0 will be used. Content analysis will used to analyse the post-intervention interviews. Expected results: ACDT will be feasible for implementation and acceptable for community-dwelling older adults with hearing loss. While ACDT will not be able to improve underlying hearing in ARHL, it will be more effective on improving participants' cognitive function, social engagement and loneliness, and ability in information processing, interpretation and communication, than CG.
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Global cognition
Timeframe: will be assessed at baseline (T0), and Week 12 (immediately after the intervention) (T1)