High prevalence and no latitude gradient of multiple sclerosis in Norway

The prevalence of multiple sclerosis (MS) is increasing, and the presence of a latitude gradient for MS risk is still discussed. We present the first nationwide prevalence estimates for Norway, spanning the latitudes from 58–71 degrees North, in order to identify a possible latitude gradient. Inform...

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Bibliographic Details
Published in:Multiple sclerosis 2014-11, Vol.20 (13), p.1780-1782
Main Authors: Berg-Hansen, P, Moen, SM, Harbo, HF, Celius, EG
Format: Article
Language:English
Subjects:
Humans
Multiple Sclerosis - epidemiology
Norway - epidemiology
Prevalence
Registries
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Summary:The prevalence of multiple sclerosis (MS) is increasing, and the presence of a latitude gradient for MS risk is still discussed. We present the first nationwide prevalence estimates for Norway, spanning the latitudes from 58–71 degrees North, in order to identify a possible latitude gradient. Information from the Oslo MS Registry and the Norwegian MS Registry and Biobank was combined with data from the Norwegian Patient Registry, the Norwegian Prescription Database and Statistics Norway. We estimated a crude prevalence of 203/100,000 on 1 January 2012. The prevalence in the Northern and Southern regions were not significantly different. MS prevalence in Norway is among the highest reported worldwide. We found no evidence of a latitude gradient.
ISSN:1352-4585
1477-0970
DOI:10.1177/1352458514525871