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Prevalence and Incidence of Neuromyelitis Optica Spectrum Disorder in Korea: Population Based Study

Authors
Lee, Hye LimKim, Jae YoungSeok, Jin MyoungHong, Yoon-HoLim, Nam GuShin, Ha YoungKim, Byung-JoHwang, Soon-YoungMin, Ju-HongKim, Byoung Joon
Issue Date
4-5월-2020
Publisher
KOREAN ACAD MEDICAL SCIENCES
Keywords
Neuromyelitis Optica Spectrum Disorder; NMOSD; Prevalence; Incidence
Citation
JOURNAL OF KOREAN MEDICAL SCIENCE, v.35, no.17
Indexed
SCIE
SCOPUS
KCI
Journal Title
JOURNAL OF KOREAN MEDICAL SCIENCE
Volume
35
Number
17
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/56040
DOI
10.3346/jkms.2020.35.e115
ISSN
1011-8934
Abstract
Background: Although neuromyelitis optica spectrum disorder (NMOSD) is known to be a rare disease, its prevalence and incidence have not yet been studied in Korea. We performed a population-based study to examine the prevalence and incidence of NMOSD in Korea using data from the Korean National Health Insurance (NHI) claims database. Methods: Data from 2013 to 2017 were obtained, with a washout period set as 2013 and 2014. The prevalence and incidence of NMOSD in 2016 and 2017 were calculated using population census data. Subjects were divided into 5 groups at 15-year intervals, depending on the age at which the diagnostic code was entered. The relative risk (RR) for each age group was compared with the oldest (>= 60 years) age group. Results: The overall prevalence was estimated to be 3.36 and 3.56 per 100,000 individuals, with an incidence of 0.41 and 0.65 per 100,000 individuals-year in 2016 and 2017, respectively. The mean age was 43.08 (standard deviation, 14.56) years, and the ratio of male to females was 1:4.7. The incidence was higher in female individuals aged between 30 and 59 years (RR, 2.8-3.05; P< 0.05). Conclusion: Nationwide prevalence of NMOSD in Korea was 3.36 and 3.56/100,000 and its incidence was 0.41 and 0.65/100,000-year in 2016 and 2017 respectively.
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의과대학 (의학과)
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