Identification of incident dementia with a case passive follow-up in a cohort of 1693 subjects in Northern Italy: reliability of a classification algorithm querying the health information system

Health Informative Systems constitute a powerful resource to produce epidemiological results from large scale population-based studies. Scientifi c literature reports an increasing number of studies investigating through their use different health outcomes. Aim of this study was to evaluate the reliability of an algorithm in identifying Dementia cases from Health Information System of ASLMi1 (HIS-Mi1) by comparing the observed incidence with the expected in the general European population (EuroDem)