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Chinese Journal of Geriatrics Research(Electronic Edition) ›› 2020, Vol. 07 ›› Issue (03): 29-35. doi: 10.3877/cma.j.issn.2095-8757.2020.03.007

Special Issue:

• Mtea Analasis • Previous Articles     Next Articles

Prevalence of dementia in the elderly in China: A systematic review and Meta analysis

ShiMing Li1, ZaiFang Chen2, Wei Feng1, ZiJuan Zhang1, Yue Wu1, QuePing Yang1,()   

  1. 1. Department of Social Prevention, Wuxi Mental Health Center affiliated to Nanjing Medical University, Wuxi 214000, China
    2. Wuxi Center for Disease Control and Prevention, Wuxi 214000, China
  • Received:2019-12-12 Online:2020-08-28 Published:2020-08-28
  • Contact: QuePing Yang
  • About author:
    Corresponding author: Yang Queping, Email:

Abstract:

Objective

To understand the prevalence of dementia in the elderly in China through Meta analysis.

Methods

We searched the CNKI database, Wanfang database, CBM database and VIP database from 1979 to 2019 about the prevalence of dementia in China, as well as the PubMed database from 1946 to 2019. The literature quality was evaluated according to the evaluation criteria for cross-sectional studies stated by STROBE, the combined prevalence rate was evaluated by Stata 12.0 software. The gender, region, age and other factors were analyzed by subgroup analysis. The publication bias was evaluated by egger test and funnel plot, and the sensitivity was analyzed.

Results

A total of 48 references were included, with a total sample size of 165 192, including 70 448 males and 81 668 females. The overall prevalence of dementia in the elderly in China was 5.3%(95%CI=4.5%-6.0%). The subgroup analysis showed that the prevalence rate of female was higher than that of male, the prevalence of primary school and below was higher than that of above primary school, the prevalence of the aged ≥ 70 years was higher than that of the aged 60~69 years, the prevalence rate of publication year in 2010-2019 was higher than that in 1994-2009, all the differences were statistically significant (t=3.051, 5.957, 10.140, 3.554; P < 0.05). There was no statistically significant difference in the prevalence rate among different regions and different types of residence (t=1.028, 1.042; P > 0.05).

Conclusion

The prevalence rate of dementia in the elderly is higher in China, and the prevalence rate of female is significantly higher than that of male, and the prevalence rate increases with age, Therefore, appropriate prevention strategies should be taken to control it.

Key words: Dementia, Aged, Prevalence, Meta analysis

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