Recall of recent and more remote depressive episodes in a prospective cohort study

BackgroundIn psychiatric epidemiology, symptoms are often assessed retrospectively. This raises concerns about the accuracy of the information recalled. In this study, we sought to examine the level of agreement between survey items assessing recent and more remote depressive episodes.MethodsData from the Canadian National Population Health Survey (NPHS) were used. The NPHS is a prospective study following a representative cohort of household …