Dementia is one of the most important public health problems as a result of the rapidincrease in the number of elderly persons worldwide. Improvement of prevention strategies andcaring for people with dementia should be undertaken. We performed a door-to-door study toscreen all subjects aged 50 years and older (n=4,329 of 33,285 inhabitants) in Al-Quseir city.

The screening was performed by 3 neuropsychiatrists, using a modified form of the Mini-MentalState Examination. Suspected cases were subjected to case ascertainment according to Diagnosticand Statistical Manual of Mental Disorders, Fourth Edition, Text Revision, diagnostic criteriafor dementia; full clinical assessment; psychometric assessment using Cognitive AbilitiesScreening Instruments, Hachinski Ischaemic Score, Instrumental Activities of Daily LivingScale and the Geriatric Depression Scale; neuroimaging (computed tomography and/or magneticresonance imaging); and laboratory investigations for selected patients when indicated.The prevalence of dementia was 2.01% for participants aged 50 years or older and 3.83% forthose aged 60 years or older. It increased steeply with increasing age to a maximum of 13.5%for those aged 80 years or older. Alzheimer’s dementia (48.3%) was the most common subtype,followed by vascular dementia (36.8%), dementia resulting from general medical conditions(11.5%), and last, dementia resulting from multiple etiologies (3.4%).