Efficacy of the Hong Kong‐Vigilance and Memory Test Platform on Early Detection of Cognitive Deficits and Promotion of Healthy Behaviors in Older Adults

Introduction The global rise of cognitive impairment and dementia poses significant public health challenges. The Hong Kong‐Vigilance and Memory Test (HK‐VMT) platform combines dementia risk assessment and cognitive tests in one accessible tool to enable early detection of dementia in a community setting. This study aimed to evaluate the effectiveness of the HK‐VMT platform in assessing dementia risk and a broad spectrum of cognitive impairment in community‐dwelling adults. It also assesses the impact of the platform on improving public awareness and encouraging lifestyle changes. Methods This cross‐sectional study assessed 517 adults aged 50 and above recruited through outreach activities between July 2024 and March 2025. Participants underwent a two‐stage screening process consisting of dementia risk assessment and cognitive test. The platform collected data on socio‐demographic, psychological, medical, and physiological factors for assessing dementia risk using Cognitive Ageing Risk Score (CARS). Cognitive performance was measured by the HK‐VMT. User feedback on platform accessibility, adoption, user engagement, public awareness, and attitudes toward healthy lifestyles was obtained through interview. Results Before screening, 78% of participants with cognitive impairments were unaware of their condition. Cognitive deficits were detected in 11.4% of participants. Over 80% expressed intentions to adopt a healthy lifestyle after screening. Conclusion The HK‐VMT platform shows enhanced early detection of cognitive impairments, improved accessibility, increased public awareness, and engaged the public in brain health management. It represents a scalable solution to support healthy aging and reduce disparities in early dementia preventive care by bridging community cognitive health services.