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Neurocognitive Disorders: Epidemiology

Knowledge of the prevalence and incidence of neurocognitive disorders (NCDs) is vital to the field of abnormal and clinical psychology given the large number of individuals with such disorders worldwide. The general term neurocognitive disorder is used in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), to comprise three syndromes: (1) mild NCD, (2) major NCD, and (3) delirium. In the DSM-5, NCD subsumes the DSM-IV categories of Dementia, Delirium, Amnestic, and Other Cognitive Disorders. Mild and major NCD as well as delirium are defined in the DSM-5 by specific diagnostic criteria. This entry discusses their prevalence and incidence.

Definitions: Prevalence and Incidence

Prevalence and incidence are technical terms in epidemiology, which is the study of disease frequency in different populations. Prevalence and ...

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