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Hypothetical Interventions on Risk Factors for Cognitive Impairment among Chinese Older Adults: An Application of the Parametric G-Formula

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  • Zi Zhou

    (State Key Laboratory of Molecular Vaccine and Molecular Diagnostics, School of Public Affairs and School of Public Health, Xiamen University, Xiamen 361102, China)

  • Lun Cai

    (School of Public Health, Key Laboratory of Health Technology Assessment of Fujian Province University, Xiamen University, Xiamen 361102, China)

  • Jian Fu

    (School of Public Health, Key Laboratory of Health Technology Assessment of Fujian Province University, Xiamen University, Xiamen 361102, China)

  • Yaofeng Han

    (School of Public Health, Key Laboratory of Health Technology Assessment of Fujian Province University, Xiamen University, Xiamen 361102, China)

  • Ya Fang

    (School of Public Health, Xiamen University, Xiamen 361102, China)

Abstract

The effects of psychosocial and dietary interventions on risk of cognitive impairment is not known. The aim of this study was to estimate the 10-year risks of cognitive impairment under hypothetical interventions of psychosocial factors and dietary intake among Chinese older adults. A sample of 7377 respondents aged 65 and over was drawn from the last four waves of the Chinese Longitudinal Healthy Longevity Survey from 2002 to 2011/2012. The parametric g-formula was used to estimate the risk of cognitive impairment under independent hypothetical interventions of social engagement, psychological well-being (PWB), dietary intake, and the joint interventions of their different combination. The observed risk of cognitive impairment was 20.08% (95% confidence interval (CI): 18.81, 21.07). The risk ratios (RR) of cognitive impairment under the hypothetical interventions on higher social engagement, eating fruits at least sometimes, eating vegetables at least sometimes, positive PWB were 0.72 (95% CI: 0.65, 0.82), 0.93 (95% CI: 0.89, 0.95), 0.98 (95% CI: 0.89, 1.00) and 0.99 (95% CI: 0.98, 0.99), respectively. The RR of joint intervention was 0.64 (95% CI: 0.58, 0.73). Hypothetical interventions on psychosocial factors such as social engagement and PWB, as well as fruits and vegetable intake, were beneficial to protect older adults from cognitive impairment.

Suggested Citation

  • Zi Zhou & Lun Cai & Jian Fu & Yaofeng Han & Ya Fang, 2020. "Hypothetical Interventions on Risk Factors for Cognitive Impairment among Chinese Older Adults: An Application of the Parametric G-Formula," IJERPH, MDPI, vol. 17(3), pages 1-11, February.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:3:p:1021-:d:317225
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    References listed on IDEAS

    as
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