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The Prevalence of Dementia. 1991 Baseline Study. CSHA Study Centres. 1000 kms . Prevalence of Dementia Canada 1991-92. Rate per 1,000. Source: Can Med Assoc J 1994;150:899-913. Estimated Numbers of Canadians, 65+, with Dementia, 1991. Source: Can Med Assoc J 1994;150:899-913.

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The prevalence of dementia

The Prevalence of Dementia

1991 Baseline Study



Prevalence of dementia canada 1991 92
Prevalence of DementiaCanada 1991-92

Rate per 1,000

Source: Can Med Assoc J 1994;150:899-913


Estimated numbers of canadians 65 with dementia 1991
Estimated Numbers of Canadians, 65+, with Dementia, 1991

Source: Can Med Assoc J 1994;150:899-913


Prevalence of cognitive disorder by severity and gender canada 1991
Prevalence of Cognitive Disorderby severity and gender (Canada, 1991)

Cognitively

Cognitively impaired; Dementia

normal not dementia Mild Mod.Severe

Male % 72.6 21.3 2.1 2.6 1.4

Female % 77.1 13.5 2.4 3.6 3.5

M + F % 75.2 16.8 2.3 3.1 2.6

Source: Lancet 1997;349:1793


More on the prevalence of dementia
More on the Prevalence of Dementia

  • Prevalence continues to rise beyond age 85; by 105 years of age almost 85% of people have dementia(Ebly et al., 1994)

  • Hogan et al. (1996) described physiologic changes as dementia progresses; these are similar for AD and vascular dementia.

  • About half of those with dementia live in the community and half in institutions (CSHA, 1994)

  • For almost two-thirds of those with dementia in the community, their dementia has not been formally diagnosed (Sternberg et al., 2000)


Background projected prevalence of dementia x 1 000 canada 1991 2031
Background:Projected Prevalence of Dementia (x 1,000)Canada, 1991 - 2031

All Dementias

AD

x 3

x 2

Vascular

Source: CMAJ 1994; 150: 899-913


The impact of demographic changes on annual incidence of dementia in canada
The Impact of Demographic Changes on Annual Incidence of Dementia in Canada

Numbers

of cases

2011

2001

1991

Note: this chart assumes constant age-sex prevalence

rates for dementia, and shows the impact of the growth

in the elderly population on numbers of people with dementia


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