Journal of neurology, neurosurgery, and psychiatry
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J. Neurol. Neurosurg. Psychiatr.
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J. Neurol. Neurosurg. Psychiatr. · Jan 2004
The epidemiology of multiple sclerosis in Devon: a comparison of the new and old classification criteria.
To determine the prevalence of multiple sclerosis in Devon and compare the new McDonald classification guidelines with the Poser criteria currently used. ⋯ This is first survey to use the new recommended guidelines and compare these criteria with the Poser classification. The difficulties encountered with applying the new criteria in research are highlighted, as are the differences between the new and old criteria. This study reports one of the highest prevalences in the south of the UK, adding support for a north-south divide being a step effect rather than a latitudinal gradient.