Abstract
We aimed to determine the prevalence, risk factors, patient-centered impact and health-related costs of three types of dual sensory impairment (DSI) in a multi-ethnic older Asian population. In this population-based, cross-sectional study (2017–2022) of 2048 Asian adults aged ≥ 60 years, vision, hearing and olfactory impairments (VI, HI and OI) were assessed using validated clinical tests. DSI types included: VI + HI, VI + OI, and HI + OI. Age-, sex-, and ethnicity-adjusted prevalence rates (2020 Singapore Census) were calculated. Regression analyses identified associated risk factors, impacts and healthcare costs. Of the 2048 participants (mean age ± standard deviation 75.7 ± 7; 49.5% female), prevalence rates of VI + OI, VI + HI, OI + HI were 1.0%, 7.3% and 21.7%, respectively. Older age (odds ratio[OR]1.22) and multimorbidity (OR3.74) were significantly associated with VI + HI, while older age (OR1.23), males (OR3.62), living alone (OR2.37) and current smoking (OR2.51) were associated with higher odds of OI + HI. VI + HI was associated with lower HRQoL-scores (β:− 0.026), while VI + HI (OR2.39) and OI + HI (OR2.10) were associated with lower IADL status. The OI + HI group showed a trend toward higher healthcare costs compared to those without. DSI, particularly OI + HI, is relatively prevalent in older Singaporean adults. Early identification and targeted screening of at-risk groups may mitigate adverse outcomes and healthcare cost, given the global ageing population.
Data availability
The datasets generated and/or analyzed during the current study are available from the corresponding author on reasonable request. All requests will be considered in accordance with institutional and ethical guidelines.
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Prof. Lamoureux is supported by the Singapore National Medical Research Council Senior Clinician Scientist Award (CSA-NMRC-CSA-SI #JRNMRR197001 and NMRC-CSA-SI #JRNMRR140601). The grant body had no roles in design, conduct or data analysis of the study, nor in manuscript preparation and approval. The funding sources had no role in design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; or in the decision to submit the manuscript for publication.
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Drs Gupta and Lamoureux had full access to all the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Gupta, Nooteboom and Lamoureux. Acquisition, analysis, or interpretation of data: Gupta, Nooteboom, Wong, Fenwick, Man, and Lamoureux. Drafting of manuscript: Gupta, Nooteboom, Fenwick, Man, and Lamoureux. Critical revision of the manuscript for important intellectual content: Gupta, Nooteboom, Fenwick, Man, Wong, Forde, Yeo, Gao, Tan, Yee, Ng, Teo and Lamoureux. Obtained funding: Lamoureux. Statistical analysis: Wong. Administrative, technical, or material support: Gupta. Study Supervision: Gupta, Lamoureux.
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Nooteboom, I., Fenwick, E.K., Man, R.E.K. et al. Elucidating the burden of dual-sensory impairment in community-based older individuals in a multi-ethnic society. Sci Rep (2026). https://doi.org/10.1038/s41598-026-40484-9
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DOI: https://doi.org/10.1038/s41598-026-40484-9