Design, methods and demographic findings of the DEMINVALL survey: a population-based study of Dementia in Valladolid, Northwestern Spain

Background This article describes the rationale and design of a population-based survey of dementiain Valladolid (northwestern Spain). The main aim of the study was to assess the epidemiology of dementiaand its subtypes. Prevalence of anosognosiain dementiapatients, nutritional status, diet characteristics, and determinants of non-diagnosed dementiain the community were studied. The main sociodemographic, educational, and general health status characteristics of the study population are described.