4.7 Article

Risk factors for subjective cognitive decline: the CABLE study

Journal

TRANSLATIONAL PSYCHIATRY
Volume 11, Issue 1, Pages -

Publisher

SPRINGERNATURE
DOI: 10.1038/s41398-021-01711-1

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Funding

  1. National Natural Science Foundation of China [91849126]
  2. National Key R&D Program of China [2018YFC1314700]
  3. Shanghai Municipal Science and Technology Major Project [2018SHZDZX01]
  4. ZHANGJIANG LAB, Tianqiao and Chrissy Chen Institute
  5. State Key Laboratory of Neurobiology and Frontiers Center for Brain Science of Ministry of Education, Fudan University

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The study identified risk factors for subjective cognitive decline (SCD) in individuals without objective cognitive impairment. Factors such as older age, thyroid diseases, minimal anxiety symptoms, and day time dysfunction were stable risk factors, while female sex, anemia, lack of physical exercises, and living alone were suggestive risk factors for SCD. The prevalence of SCD increased with the clustering of more risk factors in individuals.
Increasing evidences supported that subjective cognitive decline (SCD) might be a potential first symptomatic manifestation of Alzheimer's disease (AD). The rapidly growing number of SCD individuals who seek medical help and advice also makes it urgent to develop more precise strategy for SCD. Therefore, this study aimed to explore the risk factors for SCD. Logistics and linear regression models were performed to investigate 41 factors for SCD in 1165 participants without objective cognitive impairment. Cochran-Armitage trend test was used to confirm the constant trend toward higher prevalence of SCD with an increasing number of risk factors. A high overall prevalence of SCD was found in total participants (42%). Eight factors were eventually identified as risk factors for SCD, including four stable factors associated with both SCD statues and severity (older age, thyroid diseases, minimal anxiety symptoms, and day time dysfunction; odds ratio (OR) ranging from 1.74 to 2.29) as well as four suggestive factors associated with either SCD statues or severity (female sex, anemia, lack of physical exercises, and living alone; OR ranging from 1.30 to 2.29). The prevalence of SCD gradually increased with the number of risk factors clustering increased in individuals (p for trend <0.001). Five of these eight factors were further proved among individuals with SCD-plus features. These findings revealed several risk factors for SCD, providing some new clues for formulating priority strategies for early prevention of SCD.

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