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Global variation in prevalence and incidence of amyotrophic lateral sclerosis: a systematic review and meta-analysis
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Global variation in prevalence and incidence of amyotrophic lateral sclerosis: a systematic review and meta-analysis
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Journal Article
Global variation in prevalence and incidence of amyotrophic lateral sclerosis: a systematic review and meta-analysis
2020
Overview
Background
Amyotrophic lateral sclerosis (ALS) is a global disease, which adversely affects the life quality of patients and significantly increases the burden of families and society. We aimed to assess the changing incidence, prevalence of ALS around the world.
Methods
We searched Medline, Embase, Web of Science, and Cochrane library to identify articles published until September 9, 2018. Each included study was independently reviewed for methodological quality by two reviewers. We used a random-effects model to summarize individual studies and assessed heterogeneity (
I
2
) with the
χ
2
test on Cochrane’s Q statistic.
Results
We identified 124 studies that were eligible for final inclusion, including 110 studies of incidence and 58 studies of prevalence. The overall crude worldwide ALS prevalence and incidence were 4.42 (95% CI 3.92–4.96) per 1,00,000 population and 1.59 (95% CI 1.39–1.81) per 1,00,000 person-years, respectively. ALS prevalence and incidence increased by age until the age of 70–79. Since 1957, incidence has been significantly rising year by year, and this upward trend was weakened after standardization. The longest survival time were in Asia (ranging from 3.74 years in South Asia to 9.23 years in West Asia).
Conclusions
With the aggravation of population aging and the rapid growth of economy, developing regions following the development pattern of the developed regions may suffer rising ALS prevalence and incidence which may increase their disease burden as well. These data highlight the need for research into underlying mechanism and innovations in health-care systems.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
