From: Dementia in the oldest old: a multi-factorial and growing public health issue
Study | Age (years) | n | Population | Level of education | Baseline dementia prevalence |
---|---|---|---|---|---|
90+ Study [6] | 90+ | 911 | Survivors of Leisure World Cohort Study (77% female) | High (51% vocational school or college degree) | 41% (45% of females; 28% of males) |
Leiden 85-Plus Study [20] | 85+ | 891 | Inhabitants of Leiden, Sweden (72% female) | Not reported | 23% (24% of females; 18% of males; 34% of 90+) |
Vantaa 85+ Study [21] | 85+ | 521 | Inhabitants of Vantaa, Finland (79% female) | Low (mean 4.2 years) | 38% (39% of females; 35% of males; 90+ data not available) |
WISE [22] | 85+ | 1,299 | Ancillary study to Study of Osteoporotic Fractures (100% female) | High (85% high school or greater) | 18% (28% of 90+) |
85+ | 987 | Inhabitants of the Kungsholmen district, Stockholm, Sweden (68% female) | Low (63% of 90+ participants only elementary school) | 32% (36% of females; 22% of males; 39% of 90+) | |
Cache County Study [27] | 85+ | 719 | Inhabitants of Cache County, Utah (66% female) | Medium (mean 12.1 years) | 23% (24% of females; 20% of males; 38% of 90+) |
Eurodem [25] | 85+ | 1,623 | Combined data from dementia prevalence studies conducted in 10 different European countries, including the Leiden 85-Plus Study (73% female) | Variable | 24% (26% of females; 22% of males; 33% of 90+) |
Canadian Study of Health and Aging [26] | 85+ | 1,807 | Inhabitants of Canada (72% female) | Medium (mean 9 years) | 29% (31% of females; 23% of males; 44% of 90+) |