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Prevalence of Dementia Subtypes in El Prat de Llobregat, Catalonia, Spain: The PRATICON Study

Gascón-Bayarri J.a · Reñé R.a · Del Barrio J.L.c · De Pedro-Cuesta J.c · Ramón J.M.b · Manubens J.M.d† · Sánchez C.a · Hernández M.a · Estela J.a · Juncadella M.a · Rubio F.R.a
aDementia Unit, Department of Neurology and bDepartment of Preventive Medicine, Bellvitge University Hospital, L’Hospitalet de Llobregat, Barcelona, cNational Center for Epidemiology, Carlos III Institute of Public Health, Madrid, dDepartment of Neurology, Virgen del Camino Hospital, Pamplona, Spain Neuroepidemiology 2007;28:224–234 (DOI:10.1159/000108597)


Background: Studies on dementia subtypes show a wide variation in the prevalence of Alzheimer’s disease (AD) and vascular dementia (VD) worldwide. However, studies reporting on Lewy body dementia (LBD) and frontotemporal dementia (FTD) are sparse. Aims: To describe the prevalence ofdementia and subtypes. Method: A 34% sample of 5,150 subjects aged 70 years and over in El Prat de Llobregat (Barcelona) were screened by the Mini-Mental State Examination. When scoring <24, participants were assessed to establish a diagnosis. Results: There were 165 subjects diagnosed with dementia (prevalence of 9.4%). Subtypes of dementia were: AD 69.1%, VD 12.7%, LBD 9.1%, FTD 3% and secondary dementia 1.8%. Prevalences were: AD 6.5%, VD 1.2%, LBD 0.9% and FTD 0.3%. Conclusions: AD and VD were the most common type of dementia. Prevalence of dementia, AD and FTD were similar to those reported, while prevalence of VD and LBD were lower.


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