Explain why it is difficult for epidemiologists to get an accurate picture of the number of cases of dementia, and the types of dementia, in the U.S. population
Answer:
Generally the epidemiologists' problem is one of diagnosis. Mild symptoms of dementia are difficult to distinguish from problems associated with normal aging. Mild symptoms are hard to detect reliably. In order to diagnose dementia, multiple assessments are required over time, whereas epidemiological assessments are usually made at one point in time. Finally, the undifferentiated dementias require post mortem analysis of brain tissue to make an accurate diagnosis of a specific type of dementia.
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