Prevalence of dementia subtypes in El Prat de Llobregat, Catalonia, Spain: the PRATICON study.
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.


OBJECTIVE
To describe the prevalence of dementia and subtypes.


METHODS
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.
Gascón-Bayarri
J
J
Dementia Unit, Department of Neurology, Bellvitge University Hospital, L'Hospitalet de Llobregat, Barcelona, Spain.
Reñé
R
R
Del Barrio
J L
JL
De Pedro-Cuesta
J
J
Ramón
J M
JM
Manubens
J M
JM
Sánchez
C
C
Hernández
M
M
Estela
J
J
Juncadella
M
M
Rubio
F R
FR
D000368:Aged; D000369:Aged, 80 and over; D003625:Data Collection / Q000379:methods; D003704:Dementia / Q000145:classification* / Q000453:epidemiology* / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D015995:Prevalence; D011569:Psychiatric Status Rating Scales; D013030:Spain / Q000453:epidemiology