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The prevalence of psychiatric illness among 100 elderly medical inpatients was determined using the Geriatric Mental State Schedule, in its Community Version. Due to the difficulties in assessing this group of patients, less than half of those admitted could be included in the study. The diagnostic cases identified were in three groups: organic brain disease (chronic brain failure), depression, and anxiety. Depression was found in 23%, anxiety in 7% and organic brain disease in 13%.
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Burn et al. (1993) studied this question.
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