Abstract
The aim of this study was to ascertain the prevalence of multiple sclerosis (MS) in a northern Spanish region and to compare it with that from the most recent epidemiological studies in the country. MS prevalence was studied for a period of 2 years using multiple sources of information in the province of Valladolid, with a sample comprising a total population of 92,632. Patients were classified according to the Poser criteria. The crude prevalence of definite and probable MS was 58.3 per 100,000 (95% confidence interval: 43.7–75.7). The same methods have been used in ascertaining similar prevalence rates in Vélez-Málaga, Osona, and Gijón and a slightly lower rate in Teruel. Our survey confirms Spain as a high-risk area for MS, with prevalence rates over 50 per 100,000.
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Received: 4 March 1998 Received in revised form: 13 May 1998 Accepted: 10 June 1998
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Tola Arribas, M., Yugueros, M., Fernández-Buey, N. et al. Prevalence of multiple sclerosis in Valladolid, northern Spain. J Neurol 246, 170–174 (1999). https://doi.org/10.1007/s004150050329
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DOI: https://doi.org/10.1007/s004150050329