Chapter 24. Prevalence of Major NCD among Older Adults

24.1 Synopsis

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You must read each slide, and complete any questions on the slide, in sequence.

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Prevalence of Major NCD among Older Adults

This activity explores both age and regional differences in the rates at which older people are diagnosed with major neurocognitive disorder.

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Elderly person in sweater and jeans sitting on rock, with back to camera.

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24.2 Global Prevalence of Major NCD among Older Adults

Prevalence of Major NCD among Older Adults

Almost everyone is projected to live past age 60, and about half of those over age 60 have some memory or other intellectual losses. However, most have not reached the point of intellectual impairment, and few have major NCD.

If the chart below showed prevalence for only those over age 90, the percentages would differ dramatically: Far fewer would survive, and far more of the survivors would have a major NCD. Even at the oldest ages, however, some would still be intellectually sharp.

Click on the various regions to see what percentage of each age group has a major NCD.

Data from World Health Organization, 2012; United Nations, July, 2015.

24.3 Prevalence of Major NCD among Older Adults

Prevalence of Major NCD among Older Adults

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Question 24.1 Prevalence of Major NCD among Older Adults

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Answers will vary, but the discrepancy may be because many people are not diagnosed or are misdiagnosed, or because the overall rate (the number of cases versus the total population) has decreased.

24.4 Activity Completed!

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REFERENCES

Rosenfeld, Michael J. & Thomas, Reuben J. (2012). Searching for a mate: The rise of the Internet as a social intermediary. American Sociological Review, 77(4), 523–547.
doi: 10.1177/0003122412448050

World Health Organization. (2012). Dementia: A public health priority. Geneva, Switzerland: World Health Organization.

United Nations (2015). Probabilistic Population Projections based on the World Population Prospects: The 2015 Revision. Population Division, DESA. https://esa.un.org/unpd/wpp/Publications/Files/Key_Findings_WPP_2015.pdf