INTRODUCTION: The reported prevalence of @entity1737 ranges between 5 and 24 cases per 100,000, and @entity1 over 65years account for less than 50% of all cases. The prevalence and clinical characteristics of @entity1737 in the county of Osona were studied in @entity1 younger and older than 65. METHODS: The study draws from the county-based prospective @entity1737 register implemented by the Neurology Department at Hospital General de Vic in 1991. RESULTS: The prevalence of @entity1737 was 32.89*10(5) inhabitants (95%CI, 23.86-41.91). The standardized prevalence (European population) was 35.47*10(5) inhabitants (95%CI, 26.10-44.84). The ratio of @entity1 to @entity1 was 1.3. Overall, the group of @entity1 older than 65 accounted for 62.75% of all cases. The prevalence of @entity1737 increased considerably in older age groups. No cases were registered among @entity1 under 25years old, prevalence was 21.87*10(5) in the 25 to 64 age group, and prevalence in @entity1 over 65 years increased to 122.35*10(5). The clinical characteristics prior to treatment and at the cut-off date are similar (P>.05) in @entity1 younger than 65 and those aged 65 and older. CONCLUSIONS: These figures show the highest prevalence rate reported to date. This high prevalence is due to the rate observed among @entity1 older than 65. These results provide a new warning that @entity1737 may be underdiagnosed in the elderly population.

Prevalence of XXXX in the Catalan county of Osona.

@entity1 :: ('9606', 'Species') :: ['women', 'patients', 'people', 'men'] @entity1737 :: ('MESH:D009157', 'Disease') :: ['myasthenia gravis']
@entity1737 :: (MESH:D009157,Disease) :: ['myasthenia gravis']
