Dementia rate in extreme elderly population

February, 2010

Data from The 90+ Study has revealed a sharply increasing incidence rate for dementia, from nearly 13% per year for 90-94, to over 40% in the 100+ age group.

Data from 330 participants in The 90+ Study, of whom 70% were women, has revealed an overall annual incidence rate of 18.2% for dementia, rising from 12.7% per year in the 90-94 age group, to 21.2% in the 95-99 age group and 40.7% per year in the 100+ age group. 60% of the cases were attributed to Alzheimer's disease, 22% vascular dementia, 9% mixed Alzheimer’s and vascular dementia and 9% other/unknown. Unlike previous findings, rates were very similar for men and women.

http://www.eurekalert.org/pub_releases/2010-02/w-die022410.php

Reference:

[183] Corrada, M. M., Brookmeyer R., Paganini-Hill A., Berlau D., & Kawas C. H.
(2010). Dementia incidence continues to increase with age in the oldest old: The 90+ study.
Annals of Neurology. 67(1), 114 - 121.

seniors

dementia prevalence

Alzheimers

Related News

70-year-olds smarter than they used to be

Beginning in 1971, healthy older adults in Gothenburg, Sweden, have been participating in a longitudinal study of their cognitive health. The first H70 study started in 1971 with 381 residents of Gothenburg who were 70 years old; a new one began in 2000 with 551 residents and is still ongoing.

Memory impairment more common in people with a history of cancer

Confirming earlier indications from small studies, a very large nationwide survey has found that people who have had cancer are 40% more likely to experience memory problems that interfere with daily functioning.

When estrogen helps memory, and when it doesn’t

Recent rodent studies add to our understanding of how estrogen affects learning and memory.

Insulin sensitivity may explain link between obesity, memory problems

Previous research has indicated that obesity in middle-age is linked to higher risk of cognitive decline and dementia in old age.

Compound in celery, peppers reduces age-related memory deficits

Inflammation in the brain appears to be a key contributor to age-related memory problems, and it may be that this has to do with the dysregulation of micro

Mental activity may slow cognitive decline initially, but speed up dementia later

A long-running study involving 1,157 healthy older adults (65+) who were scored on a 5-point scale according to how often they participated in mental activities such as listening to the radio, watching television, reading, playing games and going to a museum, has found that this score is correla

Friends, family detect early Alzheimer's signs better than traditional tests

Confirming earlier research, a study involving 257 older adults (average age 75) has found that a two-minute questionnaire filled out by a close friend or family member is more accurate that standard cognitive tests in detecting early signs of Alzheimer’s.

Low levels of omega-3 fatty acid may contribute to Alzheimer’s

Low levels of DHA, an omega-3 fatty acid, have been found in the brains of those with Alzheimer's disease, but the reason has not been known.

Career choice may determine where frontotemporal dementia begins

A review of brain imaging and occupation data from 588 patients diagnosed with frontotemporal dementia has found that among the dementias affecting those 65 years and younger, FTD is as common as Alzheimer's disease.

Cognitive decline is not simply a function of getting old

Findings from the long-running Religious Orders Study, from 354 Catholic nuns and priests who were given annual cognitive tests for up to 13 years before having their brains examined post-mortem, has revealed that even the very early cognitive impairments we regard as normal in aging are associa

Pages