{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T12:00:37Z","timestamp":1781092837388,"version":"3.54.1"},"reference-count":11,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2026,3,11]],"date-time":"2026-03-11T00:00:00Z","timestamp":1773187200000},"content-version":"vor","delay-in-days":69,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100000925","name":"National Health and Medical Research Council","doi-asserted-by":"publisher","award":["1171319"],"award-info":[{"award-number":["1171319"]}],"id":[{"id":"10.13039\/501100000925","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["alz-journals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Alz &amp; Dem Diag Ass &amp; Dis Mo"],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>INTRODUCTION<\/jats:title>\n                    <jats:p>Administrative datasets can be used to calculate population incidence and prevalence of dementia. It is unclear how changes in data sources may affect these estimates.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>METHODS<\/jats:title>\n                    <jats:p>\n                      We obtained linked administrative health data for individuals 60 years of age or older in Western Australia for 1989\u20132019 (\n                      <jats:italic>n<\/jats:italic>\n                      \u00a0=\u00a0893,243) including hospital admissions, emergency department, cause\u2010of\u2010death, aged care assessment (from April 2003), and mental health services.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>RESULTS<\/jats:title>\n                    <jats:p>There was a marked increase in prevalence and incidence estimates over time. There appeared to be two phases: an initial increase attenuated by 1995\u20131999 and a rapid increase since 2000\u20132004 corresponding to inclusion of aged care assessments. There was a decrease in 2015\u20132019 coinciding with the unavailability of aged care assessment data.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>DISCUSSION<\/jats:title>\n                    <jats:p>An apparent secular change in rates of dementia over 31 years may be a product of increased propensity to record dementia diagnosis and availability of additional aged care data. Consistent comprehensive data coverage is required.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/dad2.70305","type":"journal-article","created":{"date-parts":[[2026,3,11]],"date-time":"2026-03-11T10:16:23Z","timestamp":1773224183000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Pitfalls in estimating secular changes in incidence and prevalence of dementia from administrative datasets"],"prefix":"10.1002","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3650-0475","authenticated-orcid":false,"given":"Leon","family":"Flicker","sequence":"first","affiliation":[{"name":"Western Australian Centre for Health and Ageing, Medical School University of Western Australia  Perth Western Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Patrick","family":"Fitzgerald","sequence":"additional","affiliation":[{"name":"Western Australian Centre for Health and Ageing, Medical School University of Western Australia  Perth Western Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8689-6199","authenticated-orcid":false,"given":"Osvaldo P.","family":"Almeida","sequence":"additional","affiliation":[{"name":"Institute for Health Research University of Notre Dame  Fremantle Western Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9706-9316","authenticated-orcid":false,"given":"Kaarin J.","family":"Anstey","sequence":"additional","affiliation":[{"name":"University of New South Wales UNSW Ageing Futures Institute  Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1050-4574","authenticated-orcid":false,"given":"Michael","family":"Waller","sequence":"additional","affiliation":[{"name":"School of Public Health Faculty of Health Medicine and Behavioural Sciences University of Queensland  Brisbane Queensland Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0614-8319","authenticated-orcid":false,"given":"Michelle","family":"Trevenen","sequence":"additional","affiliation":[{"name":"Western Australian Centre for Health and Ageing, Medical School University of Western Australia  Perth Western Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4956-0124","authenticated-orcid":false,"given":"Annette J.","family":"Dobson","sequence":"additional","affiliation":[{"name":"School of Public Health Faculty of Health Medicine and Behavioural Sciences University of Queensland  Brisbane Queensland Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,3,11]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.3233\/JAD-220093"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jalz.2012.11.007"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.1136\/jech-2013-202744"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.1001\/jama.2025.1897"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1177\/13872877251362202"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1467-842X.1999.tb01297.x"},{"key":"e_1_2_11_8_1","unstructured":"Australian institute of health and welfare.Dementia in Australia.AIHW;2025."},{"key":"e_1_2_11_9_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598-020-65273-w"},{"key":"e_1_2_11_10_1","unstructured":"PrinceM WimoA GuerchetM AliGC WuYT PrinaAM.World Alzheimer report 2015.The global impact of dementia: an analysis of prevalence incidence cost and trends.Alzheimer's Disease International;2015."},{"key":"e_1_2_11_11_1","doi-asserted-by":"publisher","DOI":"10.1186\/s13195-016-0188-8"},{"key":"e_1_2_11_12_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12982-017-0057-3"}],"container-title":["Alzheimer's &amp; 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