{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T08:50:53Z","timestamp":1790412653395,"version":"4.1.0"},"reference-count":49,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2023,5,2]],"date-time":"2023-05-02T00:00:00Z","timestamp":1682985600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JAD"],"published-print":{"date-parts":[[2023,5,2]]},"abstract":"<jats:p>Background: Long-increasing dementia incidence and prevalence trends may be shifting. Whether such shifts have reached the very old is unknown. Objective: To investigate temporal trends in the incidence of dementia and cognitive impairment and prevalence of dementia, cognitive impairment, Alzheimer\u2019s disease, vascular dementia, and unclassified dementia among 85-, 90-, and \u2265 95-year-olds in Sweden during 2000\u20132017. Methods: This study was conducted with Ume\u00e5 85\u200a+\u200a\/Gerontological Regional Database data from 2182 85-, 90-, and \u2265 95-year-olds in Sweden collected in 2000\u20132017. Using logistic regression, trends in the cumulative 5-year incidences of dementia and cognitive impairment; prevalences of dementia, cognitive impairment, Alzheimer\u2019s disease, and vascular dementia; and Mini-Mental State Examination thresholds for dementia diagnosis were estimated. Results: Dementia and cognitive impairment incidences decreased in younger groups, which generally showed more-positive temporal trends. The prevalences of overall dementia, cognitive impairment, and Alzheimer\u2019s disease were stable or increasing; longer disease durations and increasing dementia subtype classification success may mask positive changes in incidences. Vascular dementia increased while unclassified dementia generally decreased. Conclusion: The cognitive health of the very old may be changing in the 21st century, possibly indicating a trend break.<\/jats:p>","DOI":"10.3233\/jad-220915","type":"journal-article","created":{"date-parts":[[2023,3,17]],"date-time":"2023-03-17T12:38:40Z","timestamp":1679056720000},"page":"61-74","source":"Crossref","is-referenced-by-count":8,"title":["Temporal Dementia and Cognitive Impairment Trends in the Very Old in the 21st Century"],"prefix":"10.1177","volume":"93","author":[{"given":"Bodil","family":"Weidung","sequence":"first","affiliation":[{"name":"Department of Public Health and Caring Sciences, Section of Geriatrics, Uppsala University, Uppsala, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hugo","family":"L\u00f6vheim","sequence":"additional","affiliation":[{"name":"Department of Community Medicine and Rehabilitation, Division of Geriatic Medicine, Ume\u00e5 University, Ume\u00e5, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H\u00e5kan","family":"Littbrand","sequence":"additional","affiliation":[{"name":"Department of Community Medicine and Rehabilitation, Division of Geriatic Medicine, Ume\u00e5 University, Ume\u00e5, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Johanna","family":"Wahlin","sequence":"additional","affiliation":[{"name":"Department of Community Medicine and Rehabilitation, Division of Geriatic Medicine, Ume\u00e5 University, Ume\u00e5, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Birgitta","family":"Olofsson","sequence":"additional","affiliation":[{"name":"Department of Nursing, Ume\u00e5 University, Ume\u00e5, Sweden"},{"name":"Department of Surgical and Perioperative Sciences, Division of Orthopedics, Ume\u00e5University, Ume\u00e5, 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