Volume 28, Issue 5 pp. 1636-1644
ORIGINAL ARTICLE

Urban prevalence of multiple sclerosis in China: A population-based study in six provinces

Lu Xu

Lu Xu

Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China

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Lu Chen

Lu Chen

Department of Neurology, Peking University Third Hospital, Beijing, China

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Shengfeng Wang

Corresponding Author

Shengfeng Wang

Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China

Correspondence

Shengfeng Wang and Siyan Zhan, Department of Epidemiology and Biostatistics, School of Public Health, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China

Emails: [email protected] (S.W.); [email protected] (S.Z.)

Dongsheng Fan, Department of Neurology, Peking University Third Hospital, 49 Huayuan North Road, Haidian District, Beijing 100191, China

Email: [email protected]

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Jingnan Feng

Jingnan Feng

Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China

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Lili Liu

Lili Liu

Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China

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Guozhen Liu

Guozhen Liu

Peking University Health Information Technology Co. Ltd, Beijing, China

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Jinxi Wang

Jinxi Wang

Beijing Healthcom Data Technology Co. Ltd, Beijing, China

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Siyan Zhan

Corresponding Author

Siyan Zhan

Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China

Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing, China

Center for Intelligent Public Health, Institute for Artificial Intelligence, Peking University, Beijing, China

Correspondence

Shengfeng Wang and Siyan Zhan, Department of Epidemiology and Biostatistics, School of Public Health, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China

Emails: [email protected] (S.W.); [email protected] (S.Z.)

Dongsheng Fan, Department of Neurology, Peking University Third Hospital, 49 Huayuan North Road, Haidian District, Beijing 100191, China

Email: [email protected]

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Dongsheng Fan

Corresponding Author

Dongsheng Fan

Department of Neurology, Peking University Third Hospital, Beijing, China

Correspondence

Shengfeng Wang and Siyan Zhan, Department of Epidemiology and Biostatistics, School of Public Health, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China

Emails: [email protected] (S.W.); [email protected] (S.Z.)

Dongsheng Fan, Department of Neurology, Peking University Third Hospital, 49 Huayuan North Road, Haidian District, Beijing 100191, China

Email: [email protected]

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First published: 04 February 2021
Citations: 19

Lu Xu and Lu Chen are joint first authors.

Funding information

This work was supported by the National Natural Science Foundation (grant numbers 91646107, 81701248 and 81873784).

Abstract

Background and purpose

Multiple sclerosis (MS) is a rare neurological disease addressed by only few epidemiological studies in China. This population-based study aimed to estimate the prevalence of MS in China by using national medical insurance databases.

Methods

Data from the Urban Employee Basic Medical Insurance database and the Urban Residence Basic Medical Insurance database, which were collected during 2012 to 2016 and included approximately 0.20 billion residents in six provinces, were used in this population-based study. The prevalent patients with MS were identified via diagnostic text or disease codes.

Results

The crude prevalence in 2016 was 2.44 per 100,000 population (95% confidence interval (CI) 2.18–2.72), with the prevalence in females being higher than that in males. The standardized prevalence (based on 2010 Chinese census data) was 2.29 (95% CI 2.21–2.38). The prevalence in both sexes in 2016 increased up to the age range of 30–34 years. Subsequently, the female prevalence declined with increasing age, but male prevalence stabilized with increasing age. During the 5-year time period, prevalence ranged from 2.32 (95% CI 2.06–2.60) in 2015 to 2.91 (95% CI 2.39–3.47) in 2012.

Conclusions

The prevalence of MS in China was lower than that in Europe and North America. The temporal trend of prevalence in China was also observed to be stable. As the first prevalence study of MS in mainland China, this population-based study can provide useful information for worldwide healthcare services and prevention of MS.

CONFLICT OF INTEREST

None declared.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available upon request from the corresponding author. The data are not publicly available, due to privacy or ethical restrictions.

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