{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T15:50:38Z","timestamp":1791993038204,"version":"4.4.0"},"reference-count":40,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2025,8,29]],"date-time":"2025-08-29T00:00:00Z","timestamp":1756425600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,8,29]],"date-time":"2025-08-29T00:00:00Z","timestamp":1756425600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"name":"Foundation Dam","award":["2021\/ FO347457"],"award-info":[{"award-number":["2021\/ FO347457"]}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Alzheimer\u2019s Disease"],"published-print":{"date-parts":[[2025,10]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>With increasing population longevity, Alzheimer's disease and dementia have become a health priority, and high-quality incidence estimates are needed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To provide reliable and precise incidence estimates of dementia applying a population-based sample of individuals aged 70+.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A longitudinal cohort design was used, with baseline assessment in the Norwegian HUNT4 70+ study (2017\u201319) and at follow-up four years later (2021\u201323). Age-specific dementia incidence rates, standardized for the Norwegian population, were calculated as the number of new dementia cases per 1000 person-years assuming onset midway between study waves with inverse probability weights based on baseline factors associated with non-participation or death.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Among 5229 dementia-free individuals at baseline, 749 developed dementia over a 4.2-year period, resulting in a cumulative incidence proportion of 14.3%. At follow-up, 33.8% of new dementia cases showed no baseline cognitive impairment, while the rest had mild cognitive impairment (MCI). Of those with baseline MCI, 25.5% reverted to normal cognition, 48.2% remained MCI, and 26.2% developed dementia. The dementia incidence per 1000 person-years, was 43.9 (95% confidence interval (CI) 40.8, 47.1) (weighted for non-response and standardized to the dementia-free Norwegian population).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Our study found higher dementia incidence rates in the 70+ population than hospital records indicate. Most individuals had preceding MCI, with similar numbers reverting to normal cognition as developing dementia. The projected incident dementia cases suggest a near doubling between 2023 and 2050, significantly impacting families and healthcare planning, including early detection and interventions.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/13872877251371242","type":"journal-article","created":{"date-parts":[[2025,8,29]],"date-time":"2025-08-29T13:18:47Z","timestamp":1756473527000},"page":"1469-1480","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":6,"title":["Incidence of dementia among individuals 70 years and older in Norway: A HUNT study"],"prefix":"10.1177","volume":"107","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-1544-3927","authenticated-orcid":false,"given":"Inger","family":"Molvik","sequence":"first","affiliation":[{"name":"The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, T\u00f8nsberg, Norway"},{"name":"Institute of Clinical Medicine, University of Oslo, Oslo, Norway"},{"name":"Department of Geriatric Medicine, Oslo University Hospital, Oslo, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4385-8886","authenticated-orcid":false,"given":"Bj\u00f8rn Heine","family":"Strand","sequence":"additional","affiliation":[{"name":"The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, T\u00f8nsberg, Norway"},{"name":"Department of Geriatric Medicine, Oslo University Hospital, Oslo, Norway"},{"name":"Norwegian Institute of Public Health, Norway of Public Health, Oslo, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3713-1229","authenticated-orcid":false,"given":"Anne Marie Mork","family":"Rokstad","sequence":"additional","affiliation":[{"name":"The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, T\u00f8nsberg, Norway"},{"name":"Faculty of Health Sciences and Social Care, Molde University College, 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Centre for Ageing and Health, Vestfold Hospital Trust, T\u00f8nsberg, Norway"},{"name":"The Research Centre for Age-related Functional Decline and Disease, Innlandet Hospital Trust, Ottestad, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anne","family":"Br\u00e6khus","sequence":"additional","affiliation":[{"name":"The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, T\u00f8nsberg, Norway"},{"name":"Department of Geriatric Medicine, Oslo University Hospital, Oslo, Norway"},{"name":"Department of Neurology, Oslo University Hospital, Oslo, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Knut","family":"Engedal","sequence":"additional","affiliation":[{"name":"The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, T\u00f8nsberg, Norway"},{"name":"Department of Geriatric Medicine, Oslo University Hospital, Oslo, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Linda","family":"Gj\u00f8ra","sequence":"additional","affiliation":[{"name":"The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, T\u00f8nsberg, Norway"},{"name":"Department of Psychiatry, Levanger Hospital, Nord-Tr\u00f8ndelag Hospital Trust, Levanger, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-4397-357X","authenticated-orcid":false,"given":"Grete","family":"Kjelvik","sequence":"additional","affiliation":[{"name":"The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, T\u00f8nsberg, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marte","family":"Kvello-Alme","sequence":"additional","affiliation":[{"name":"Department of Psychiatry, Levanger Hospital, Nord-Tr\u00f8ndelag Hospital Trust, Levanger, Norway"},{"name":"Department of Neurology, Nord-Tr\u00f8ndelag Hospital Trust, Levanger 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