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Published online by Cambridge University Press: 07 January 2005
Late-life depression is an immense public health problem for which research on treatment interventions is very much needed. Between 1950 and 1990, average longevity worldwide increased from 46.6 years to 64.7 years (United Nations, 1993). With this surge in the elderly population has come an increased prevalence of late-life depression and its sometimes severe consequences. Older people with depressive symptoms have a threefold increase in mortality (Ashby et al., 1991). As many as 15% to 25% of nursing home residents in the United States have major depression (NIH Consensus Development Panel, 1992), and between 50% and 80% of elderly people who commit suicide have major depression (Clark, 1991; Conwell et al., 1991; Finkel & Rosman, 1995).
