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Prevalence Rates

Dementia is a growing health care problem [1]. Figure 1 shows the DOUBLING rule - dementia rates double every 5 years after the age of 65.

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The Canadian Study of Health and Aging Working Group (CSHA) estimates that  in 2011, there will be 145,300 new cases of dementia, and of these new cases, 92, 900 will be women and 52, 400 will be men [2].  This estimate shows that dementia rates are twice as high in women compared to men, making dementia an important health care issue for women.  More research is needed to gain sex-specific data in the pathophysiology, clinical presentation and treatment of dementia.  Currently, most sex-based data that is available has been gathered via post hoc analysis.

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1. Alzheimer Society of Canada. Alzheimer's Disease Statistics (alzheimers.ca/english/disease/stats-costs.htm)

2. Canadian Study of Health and Aging Working Group. Canadian Study of Health and Aging: The incidence of dementia in Canada. Neurology 2000; 55:66-73.

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