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Subjective cognitive decline and fall risk in community-dwelling older adults with or without objective cognitive decline

Abstract

Background

The association between subjective cognitive decline and falls has not been clearly determined.

Aims

Our aim was to explore the effect of subjective cognitive decline on falls in community-dwelling older adults with or without objective cognitive decline.

Methods

We included 470 older adults (mean age 73.6 ± 5.2; 329 women) living in the community and obtained data on fall history directly from the participants. Subjective cognitive decline was assessed using a self-administered question. Objective cognitive function was measured using the Mini-Mental State Examination. Statistical analyses were carried out separately for participants with objective cognitive decline and those without.

Results

A multiple logistic regression analysis showed that, among participants without objective cognitive decline, subjective cognitive decline was positively associated with falls [OR 1.91; 95% confidence interval (CI) 1.17–3.12; p = 0.01). Conversely, among participants with objective cognitive decline, subjective cognitive decline was negatively associated with falls (OR 0.07; 95% CI 0.01–0.85, p = 0.04).

Discussion

The result suggests that the objective–subjective disparity may affect falls in community-dwelling older adults.

Conclusions

The presence of subjective cognitive decline was significantly positively associated with falls among cognitively intact older adults. However, among their cognitively impaired peers, the absence of subjective cognitive decline was positively associated with falls.

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Acknowledgements

The authors thank the students of the Department of Human Health Sciences at Kyoto University for their help with the data collection.

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Correspondence to Hidehiko Shirooka.

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The authors declare that they have no conflict of interest.

Human and animal rights

All procedures performed in studies involving human participants were in accordance with the guidelines approved by the Kyoto University Graduate School of Medicine and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Informed consent was obtained from all individual participants included in the study.

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Shirooka, H., Nishiguchi, S., Fukutani, N. et al. Subjective cognitive decline and fall risk in community-dwelling older adults with or without objective cognitive decline. Aging Clin Exp Res 30, 457–462 (2018). https://doi.org/10.1007/s40520-017-0799-3

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  • DOI: https://doi.org/10.1007/s40520-017-0799-3

Keywords

  • Subjective cognitive decline
  • Objective cognitive decline
  • Falls
  • Community-dwelling older adults