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Changes in Cognitive Function and Risk Factors for Cognitive Impairment of the Elderly in China: 2005–2014

Author

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  • Qilin Zhang

    (Centre for Social Security Studies, Wuhan University, Wuhan 430072, China)

  • Yanli Wu

    (Centre for Social Security Studies, Wuhan University, Wuhan 430072, China)

  • Tiankuo Han

    (Centre for Social Security Studies, Wuhan University, Wuhan 430072, China)

  • Erpeng Liu

    (Centre for Social Security Studies, Wuhan University, Wuhan 430072, China)

Abstract

Background: The cognitive function of the elderly has become a focus of public health research. Little is known about the changes of cognitive function and the risk factors for cognitive impairment in the Chinese elderly; thus, the purposes of this study are as follows: (1) to describe changes in cognitive function in the Chinese elderly from 2005–2014 and (2) to explore risk factors for cognitive impairment of the Chinese elderly. Design and setting: A total of 2603 participants aged 64 years and above participated in the Chinese Longitudinal Healthy Longevity Survey (CLHLS) and were followed up from 2005 to 2014. Cognitive function and cognitive impairment were assessed using the Chinese version of the Mini-Mental State Examination (MMSE). Binary logistic regression analysis was used to estimate the odds ratio (OR) and 95% confidence intervals (CI) of cognitive impairment. Results: Results revealed that the cognitive function of the Chinese elderly shows diversified changes: deterioration (55.09%), unchanged (17.21%) and improvement (27.70%). In addition, there are significant demographic differences in gender, age, education, marriage and other aspects when it comes to the changes of cognitive function in Chinese elderly. In the binary logistic regression analysis, female, increased age, lower education level, no spouse, less income, worse PWB (psychological well-being), less fresh fruit and vegetable intake, more activities of daily living (ADL) limitations, lower social engagement were significantly associated with higher odds for cognitive impairment. Conclusions: Various interventions should be implemented to maintain cognitive function in Chinese elderly.

Suggested Citation

  • Qilin Zhang & Yanli Wu & Tiankuo Han & Erpeng Liu, 2019. "Changes in Cognitive Function and Risk Factors for Cognitive Impairment of the Elderly in China: 2005–2014," IJERPH, MDPI, vol. 16(16), pages 1-13, August.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:16:p:2847-:d:256175
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    References listed on IDEAS

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    1. Chang Fu & Zhen Li & Zongfu Mao, 2018. "Association between Social Activities and Cognitive Function among the Elderly in China: A Cross-Sectional Study," IJERPH, MDPI, vol. 15(2), pages 1-11, January.
    2. Omorogieva Ojo & Joanne Brooke, 2015. "Evaluating the Association between Diabetes, Cognitive Decline and Dementia," IJERPH, MDPI, vol. 12(7), pages 1-14, July.
    3. Qiushi Feng & Haiyan Zhu & Zhihong Zhen & Danan Gu, 2016. "Editor's choice Self-Rated Health, Interviewer-Rated Health, and Their Predictive Powers on Mortality in Old Age," The Journals of Gerontology: Series B, The Gerontological Society of America, vol. 71(3), pages 538-550.
    4. Yan Feng & Erpeng Liu & Zhang Yue & Qilin Zhang & Tiankuo Han, 2019. "The Evolutionary Trends of Health Behaviors in Chinese Elderly and the Influencing Factors of These Trends: 2005–2014," IJERPH, MDPI, vol. 16(10), pages 1-17, May.
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    Cited by:

    1. Shige Qi & Yuying Sun & Peng Yin & Han Zhang & Zhihui Wang, 2021. "Mobile Phone Use and Cognitive Impairment among Elderly Chinese: A National Cross-Sectional Survey Study," IJERPH, MDPI, vol. 18(11), pages 1-11, May.

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