Prevalence of Dementia in the Geriatric Population Residing in a Long-term Care Facility: An Updated Systematic Review and Meta-Analysis

Background: The global rise in the geriatric population is increasing dementia cases, imposing significant burdens on families and society, making long-term care facilities (LTCFs) essential. Thus, updated dementia prevalence data are crucial for effective health-care planning and policy-making. Methodology: A systematic review and meta-analysis, updating Fagundes et al . (2021), included articles post-August 2, 2020, following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Studies were selected based on predefined criteria, and data extraction was independently performed by two reviewers, focusing on dementia prevalence rates, assessment tools used, and regional variations. Meta-analytic techniques estimated pooled dementia prevalence rates and assessed study heterogeneity, focusing on assessment tools and regional variations. Results: The review included 38 studies, with 18 new ones since the previous review. The pooled dementia prevalence in LTCFs was 57.8% (confidence interval 51.63–63.98; P < 0.01), up from 53%. Europe had the highest rate, while other regions showed variability. High heterogeneity suggests diverse factors, such as diagnostic criteria and population characteristics, influence prevalence estimates. Discussion: The rising dementia prevalence in LTCFs highlights the need for specialized care, improved health policies, and resource allocation. Regional prevalence variations may be due to differences in diagnostic criteria, health-care infrastructure, and societal factors, with high heterogeneity reflecting diverse methodologies and populations. Increased public awareness and ongoing research are essential for developing innovative, tailored care models for dementia patients in LTCFs. Conclusion: This updated review shows a higher dementia prevalence in LTCFs, highlighting the need for targeted interventions and policy adjustments to improve care quality and outcomes. Further research is needed to explore regional prevalence factors and develop standardized care practices.