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.