Dataset Information

Prevalence of dementia in the People's Republic of China from 1985 to 2015: a systematic review and meta-regression analysis.

ABSTRACT: BACKGROUND:In China, the most populous developing country in the world, dementia represents a serious challenge. We performed a large-scale systematic review and meta-regression analysis to elucidate the prevalence of dementia and its subtypes and to identify potential factors underlying the differences between articles. METHODS:A comprehensive literature search was conducted in the following databases to identify studies published up to December 2015: Cochrane Library, CBMDISK, Chongqing VIP, CNKI, PubMed and EMBASE. All statistical analyses (including subtype and meta-regression analyses) were performed with R version 3.3.3. RESULTS:In total, 51 surveys were selected. The pooled prevalence rates of dementia and its main subtypes, namely, Alzheimer's disease (AD) and vascular dementia (VAD), for the population aged 55?years and older were 4.03, 2.44 and 1.09%, respectively. The outcomes showed that the meta-regression analysis was affected by the publication year, sample size, region and diagnostic criteria. CONCLUSIONS:Our analysis provided reliable estimates of the prevalence of dementia/ AD/ VD over the past 30?years, which may be affected by education level, and diagnostic criteria. The prevalence of AD/VAD was higher in northern than in southern China, which warrants further study.

SUBMITTER: Zhu Y

PROVIDER: S-EPMC6521412 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature

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Prevalence of dementia in the People's Republic of China from 1985 to 2015: a systematic review and meta-regression analysis.

Zhu Yangjun Y Liu Hao H Lu Xi-Li XL Zhang Bo B Weng Wanwen W Yang Jun J Zhang Jun J Dong Meng-Jie MJ

BMC public health 20190515 1

<h4>Background</h4>In China, the most populous developing country in the world, dementia represents a serious challenge. We performed a large-scale systematic review and meta-regression analysis to elucidate the prevalence of dementia and its subtypes and to identify potential factors underlying the differences between articles.<h4>Methods</h4>A comprehensive literature search was conducted in the following databases to identify studies published up to December 2015: Cochrane Library, CBMDISK, C ...[more]

PMID: 31092218

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Project description:Epilepsy is a major neurological disorder that affects approximately 65 million people worldwide. Globally, the burden of epilepsy is not evenly distributed, with more than 80% of sufferers residing in low- and middle-income countries. This study estimates the burden of epilepsy in mainland China from 1990 to 2015 and explores the variations of burden by age and gender.We conducted a systematic review of the peer-reviewed literature from 1990 to 2015 using Chinese and English academic databases (CNKI, WanFang, VIP and PubMed) to identify population-based prospective studies on the prevalence of epilepsy in mainland Chinese. Multilevel mixed-effects logistic regression was used to estimate the prevalence of lifetime epilepsy (LTE), and restricted cubic regression splines were applied to model the functional forms of the non-linear effects of age and LTE prevalence. Random-effect meta-analysis was used to obtain the pooled prevalence of 1-year active epilepsy (AE), 2-year AE and 5-year AE separately. To estimate the number of people with LTE and AE in the years 1990, 2000, and 2015, LTE and AE prevalence were multiplied by the total population of mainland China of the corresponding year.Analyses were conducted using 39 prevalence studies that met the inclusion criteria and comprised 77 separate data points (37 on LTE, 16 on 1-year AE, 12 on 2-year AE and 12 on 5-year AE). In 1990, the prevalence of LTE ranged from 1.31‰ (95% CI?=?0.85-2.00) in the 0-4 age group to 2.42‰ (95% confidence interval CI?=?1.60-3.65) in the 30-34 age group. By 2015, the LTE prevalence had increased to 4.57‰ (95% CI?=?2.52-8.27) in the 0-4 group and 8.43‰ (95% CI?=?4.71-15.04) in the 30-34 group. Over the 25-year period, the overall prevalence of LTE had steadily increased by 259%, from 1.99‰ (95% CI?=?1.31-3.02) in 1990 to 7.15‰ (95% CI?=?3.98-12.82) in 2015. The rates of increase were similar across the whole age spectrum, fluctuating around 250%. Between 1990 and 2015, the total number of people with LTE in mainland China increased by 328%, from 2.30 million (95% CI?=?1.51-3.49) in 1990 to 9.84 million (95% CI?=?5.48-17.64) in 2015. The pooled 1-year, 2-year, and 5-year AE prevalence were 3.79‰ (95% CI?=?3.31-4.34), 4.08‰ (95% CI?=?3.41-4.89) and 4.19‰ (95% CI?=?3.42-5.15).The burden of LTE in China has increased substantially between 1990 and 2015, with the prevalence of LTE having more than doubled and the number of people with LTE more than tripled. The large amount of AE cases in China calls for optimal management and treatment. More high-quality epidemiological studies on LTE and AE prevalence are still needed.

Dataset Information

Prevalence of dementia in the People's Republic of China from 1985 to 2015: a systematic review and meta-regression analysis.

Publications

Prevalence of dementia in the People's Republic of China from 1985 to 2015: a systematic review and meta-regression analysis.

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