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Association between Cognitive Frailty and Adverse Outcomes among Older Adults: A Meta-Analysis

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The journal of nutrition, health & aging

Abstract

Objectives

This systematic review and meta-analysis aimed to pool the effect size of the association between cognitive frailty and adverse outcomes (e.g., falls, disability, and hospitalization) among older adults.

Design

Systematic review and meta-analysis.

Methods

PubMed, ScienceDirect, and Embase were searched from their respective inceptions to June 1, 2022. We extracted prospective cohort studies that reported the association between cognitive frailty and adverse outcomes. Random or fixed-effects models based on heterogeneity were used to pool the effect sizes of independent associations of cognitive frailty, frailty only, and cognitive impairment only with each adverse outcome.

Results

Fifteen studies involving 49,122 older adults were included in the meta-analysis. Older adults with cognitive frailty had higher odds ratios (OR) for falls (1.82, 95% confidence interval [CI]: 1.29–2.58), disability (3.17, 95%CI: 2.24–4.48), and hospitalization (1.78, 95%CI: 1.48–2.14) compared with those without frailty and cognitive impairment. Older adults with frailty only demonstrated a high risk for falls (pooled OR 1.76, 95%CI: 1.25–2.48), disability (pooled OR 1.82, 95%CI: 1.43–2.33), and hospitalization (pooled OR 1.64, 95% CI: 1.45–1.85). The influence of cognitive impairment only on adverse outcomes was lower compared with cognitive frailty or frailty. Subgroup analyses showed that those with cognitive frailty (defined by the frailty phenotype plus Mini-Mental State Examination) were at greater risk for developing adverse outcomes.

Conclusion

Our findings indicate that cognitive frailty is an independent risk factor for adverse outcomes (e.g., falls, disability, and hospitalization). Early screening and comprehensive intervention may improve cognitive frailty and reduce the risk for adverse outcomes among older adults.

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Acknowledgement

We thank Audrey Holmes, MA, from Liwen Bianji (Edanz) (https://www.liwenbianji.cn/) for editing the English text of a draft of this manuscript.

Funding

Funding: This work was supported by the Peking Union Medical College Hospital Research Fund (Grant number: ZC201900516).

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Correspondence to Xiao Ming Zhang or Xin Juan Wu.

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Declaration of competing interests: No competing interests existed among our authors.

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Zhang, X.M., Wu, X.J., Cao, J. et al. Association between Cognitive Frailty and Adverse Outcomes among Older Adults: A Meta-Analysis. J Nutr Health Aging 26, 817–825 (2022). https://doi.org/10.1007/s12603-022-1833-5

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