Influences on Subjective Cognitive Decline in Elderly Populations Through the Lens of the Health Ecological Model: A Scoping Review - Report - MDSpire

Influences on Subjective Cognitive Decline in Elderly Populations Through the Lens of the Health Ecological Model: A Scoping Review

  • By

  • Mengfan He

  • Yulan Chen

  • Youhua Zhang

  • Lingmei Ruan

  • April 28, 2026

  • 0 min

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Clinical Report: Influences on Subjective Cognitive Decline in Elderly Populations

Overview

Expand on the implications of the research gap regarding the policy environment.

Background

Subjective cognitive decline (SCD) is a critical early indicator of Alzheimer's Disease and Mild Cognitive Impairment, with a high prevalence among older adults. Understanding the multifaceted influences on SCD is essential for developing effective prevention strategies. The Health Ecological Model provides a comprehensive framework to analyze these influences across various dimensions.

Data Highlights

DimensionFactors
Personal CharacteristicsAge, gender, education
Behavioral CharacteristicsPhysical activity, smoking
Interpersonal NetworksSocial support, community engagement
Living and Working ConditionsHousing quality, occupational stress

Key Findings

  • The prevalence of SCD among older adults in China is reported at 46.4%.
  • Older adults with SCD have a greater than 75% probability of progressing to MCI or dementia within 10 years.
  • Factors influencing SCD are categorized into four dimensions: personal characteristics, behavioral characteristics, interpersonal networks, and living and working conditions.
  • No studies addressed the policy environment dimension, indicating a significant research gap.
  • Limitations include reliance on self-reported tools and cross-sectional designs, affecting generalizability.

Clinical Implications

Clinicians should consider the multifactorial nature of SCD when assessing older patients. Incorporating a broader range of influencing factors, including social and environmental aspects, may enhance prevention strategies. Future research should focus on integrating objective measures and exploring policy impacts on SCD.

Conclusion

This review underscores the complexity of factors influencing subjective cognitive decline in older adults and highlights the need for further research, particularly regarding the policy environment. Addressing these gaps is crucial for developing effective interventions.

References

  1. American Journal of Epidemiology, 2023 -- Examining the Relationship Between Depressive Symptoms and Cognitive Decline in Early Older Adults: A Longitudinal Fixed-Effects Analysis
  2. npj Digital Medicine, 2023 -- Collaborative Design with Frail Residents of Nursing Homes to Enhance a VR-Based Physio-Cognitive Intervention through Gamification
  3. American Journal of Epidemiology, 2023 -- Assessing the Required Follow-Up Duration for Reliable Effect Estimates in Cognitive Aging Studies
  4. npj Digital Medicine, 2023 -- Wearable Sensors for Continuous Monitoring of Cognitive and Emotional Well-Being: Exploring Digital Biomarkers for Brain Health
  5. Alzheimer's Association, 2024 -- Clinical practice guideline for the Diagnostic Evaluation, Testing, Counseling, and Disclosure of Suspected Alzheimer's Disease and Related Disorders (DETeCD-ADRD): Executive summary of recommendations for primary care
  6. Alzheimer's Disease International, 2024 -- Lancet Commission identifies two new risk factors for dementia and suggests 45% of cases could be delayed or reduced
  7. Brain patterns and risk factors in the FINGER RCT multimodal lifestyle intervention - PMC
  8. Alzheimer's Association clinical practice guideline for the Diagnostic Evaluation, Testing, Counseling, and Disclosure of Suspected Alzheimer's Disease and Related Disorders (DETeCD-ADRD): Executive summary of recommendations for primary care - PubMed
  9. Lancet Commission identifies two new risk factors for dementia and suggests 45% of cases could be delayed or reduced | Alzheimer's Disease International (ADI)
  10. Brain patterns and risk factors in the FINGER RCT multimodal lifestyle intervention - PMC

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