{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T13:24:32Z","timestamp":1787059472222,"version":"build-2736575974"},"reference-count":30,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2026,1,13]],"date-time":"2026-01-13T00:00:00Z","timestamp":1768262400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"name":"CAMS Innovation Fund for Medical Sciences","award":["2016-I2M-1-004"],"award-info":[{"award-number":["2016-I2M-1-004"]}]},{"DOI":"10.13039\/100000061","name":"Fogarty International Center","doi-asserted-by":"publisher","award":["R21-AG036454"],"award-info":[{"award-number":["R21-AG036454"]}],"id":[{"id":"10.13039\/100000061","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Beijing Science and Technology Projects","award":["Z151100003915117"],"award-info":[{"award-number":["Z151100003915117"]}]},{"name":"Beijing Science and Technology Projects","award":["Z161100000216150"],"award-info":[{"award-number":["Z161100000216150"]}]},{"name":"National Key Research and Development Project","award":["2016 yfc1305901"],"award-info":[{"award-number":["2016 yfc1305901"]}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Alzheimer\u2019s Disease"],"published-print":{"date-parts":[[2026,2]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Early detection of Alzheimer's disease (AD) is critical for timely intervention. Subjective cognitive decline (SCD), defined as self-perceived cognitive worsening while objective performance on standardized tests remains normal, when accompanied by neurodegenerative changes on brain imaging (e.g., hippocampal atrophy), can be classified as SCD with neurodegeneration of AD form (SCD-NDAD). This phenotype may represent an early stage of AD.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>Investigate the prevalence and clinical characteristics of SCD-NDAD in general population.<\/jats:p>\n                    <jats:p>Methods: This multicenter, community-based cross-sectional study was conducted from 2013 to 2019 across 31 communities in eight major cities of northern, eastern, southern, and western China. Community-dwelling adults aged 50 years and older were recruited through cluster sampling. Participants underwent standardized interviews, neuropsychological assessments, and magnetic resonance imaging, on the basis of which SCD-NDAD was identified. The prevalence of SCD-NDAD was estimated with age- and sex-standardized weights.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Of 5054 participants (mean age 69.4 years, 60.6% women), 2886 completed MRI. In participants aged \u226550 years, the prevalence of SCD-NDAD was 4.9% (95% confidence interval: 4.1% to 5.8%). In participants aged 65 years and older, prevalence increased to 6.5% (95% confidence interval: 5.5% to 7.7%). While these individuals exhibited preserved cognitive function across all domains, they demonstrated significant hippocampal atrophy, a key marker of AD-related neurodegeneration.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>SCD-NDAD is common among older adults in China, with an estimated prevalence affecting 12.4 million individuals aged \u226565 years. Identifying this cohort may offer a critical window for early intervention and holds significant implications for public health strategies aimed at dementia prevention.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/13872877251411413","type":"journal-article","created":{"date-parts":[[2026,1,14]],"date-time":"2026-01-14T06:28:58Z","timestamp":1768372138000},"page":"1974-1984","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Prevalence of subjective cognitive decline with Alzheimer's disease neuropathology in a community-based Chinese cohort"],"prefix":"10.1177","volume":"109","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3923-925X","authenticated-orcid":false,"given":"Jing","family":"Yuan","sequence":"first","affiliation":[{"name":"Department of Neurology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Dongcheng District, Beijing, P. 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