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Chapter 2. Demography and Epidemiology of Psychiatric Disorders in Late Life

Celia F. Hybels, Ph.D.; Dan G. Blazer, M.D., Ph.D.; Judith C. Hays, R.N., Ph.D.
DOI: 10.1176/appi.books.9781585623754.385211

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Excerpt

Epidemiology is traditionally defined as the distribution or pattern of disease within a specified population and determinants or factors that affect these disease patterns (MacMahon and Pugh 1970). The epidemiology of psychiatric disorders in late life, therefore, is the study of the distribution of psychiatric disorders and psychiatric symptoms among older adults and the variables that affect the distribution. In this chapter, the findings of demographers and epidemiologists are reviewed as they relate to the care of the psychiatrically impaired older adult.

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FIGURE 2–1. Population of older adults in the United States (in millions) from 1900 to 2004 and projected to 2050.Source. Data from Federal Interagency Forum on Aging-Related Statistics 2006.

FIGURE 2–2. Suicide deaths per 100,000 in the United States by age in 2004.Source. Data from National Center for Health Statistics 2006.
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Table 2–1. Prevalence of cognitive impairment in community and institutional populations of older adults
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Table 2–2. Prevalence of dementia and Alzheimer's disease in community and institutional populations
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Table 2–3. Prevalence of psychiatric symptoms in community populations of older adults
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Table 2–4. Prevalence of selected psychiatric disorders in community populations of older adults
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Table 2–5. Prevalence of selected psychiatric symptoms and disorders among older adults in selected treatment settings
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Table 2–6. Change in risk of suicide mortality over historical time period by racea, gendera, and ageb subgroups of the older populations in specific countries

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Sample questions:
1.
Which of the following demographic statistics concerning older adults is true?
2.
Diagnostic categories that approximate true disease processes should have several characteristics. Which of the following is not one of these characteristics?
3.
One of the landmark studies of the prevalence of psychiatric disorders in the United States was the Epidemiologic Catchment Area (ECA) survey. Which of the following statements concerning the ECA is true?
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The American Psychiatric Publishing Textbook of Geriatric Psychiatry, 4th Edition > Chapter 11.  >
The American Psychiatric Publishing Textbook of Geriatric Psychiatry, 4th Edition > Chapter 12.  >
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