Identify prevalence rates for different types of dementia. Prevalence shows the number of new cases of dementia in a given time period. The well-established prevalence rates for dementia in the UK are – 40-64 years - 1 in 1400 65-69 years – 1 in 100 70-79 years - 1 in 25 80+ - 1 in 6 It is estimated that by 2021 there will be one million people with dementia in the UK this is expected to rise to over 1. 7 million people with dementia by 2051. A steady rather than dramatic growth is expected over the next 25 years.
The proportions of those with different forms of dementia can be broken down as follows:
- Alzheimer's disease – 62%
- Vascular dementia – 17%
- Mixed dementia – 10%
- Dementia with Lewy Bodies – 4%
- Fronto-temporal dementia – 2%
- Other dementias – 3%
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There are currently nearly 36 million people with dementia in the world, the number of people is expected to double every 20 years, by 2050 it is projected that there will be 115 million people with dementia worldwide, 71 percent of those will live in developing countries.
There are 800,000 people in the UK with a form of dementia in 2012 and 17,000 are under 65, one in 14 people over 65, and one in 6 people over 80 have a form of dementia, the number of people with dementia in different parts of the UK has been estimated by applying new prevalence figures to estimates of the population numbers for 2011 theses are:
- England – 648,898
- Northern Ireland – 18,286
- Wales – 43,614
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