{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T05:52:05Z","timestamp":1791265925330,"version":"4.1.0"},"reference-count":40,"publisher":"Oxford University Press (OUP)","issue":"10","license":[{"start":{"date-parts":[[2026,8,25]],"date-time":"2026-08-25T00:00:00Z","timestamp":1787616000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000049","name":"National Institute on Aging","doi-asserted-by":"publisher","award":["R01AG079391"],"award-info":[{"award-number":["R01AG079391"]}],"id":[{"id":"10.13039\/100000049","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000049","name":"National Institute on Aging","doi-asserted-by":"publisher","award":["K02AG095384"],"award-info":[{"award-number":["K02AG095384"]}],"id":[{"id":"10.13039\/100000049","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000049","name":"National Institute on Aging","doi-asserted-by":"publisher","award":["P30AG028740"],"award-info":[{"award-number":["P30AG028740"]}],"id":[{"id":"10.13039\/100000049","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000049","name":"National Institute on Aging","doi-asserted-by":"publisher","award":["U01AG032947"],"award-info":[{"award-number":["U01AG032947"]}],"id":[{"id":"10.13039\/100000049","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000049","name":"National Institute on Aging","doi-asserted-by":"publisher","award":["K23AG064036"],"award-info":[{"award-number":["K23AG064036"]}],"id":[{"id":"10.13039\/100000049","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000049","name":"National Institute on Aging","doi-asserted-by":"publisher","award":["5T32AG027668-19"],"award-info":[{"award-number":["5T32AG027668-19"]}],"id":[{"id":"10.13039\/100000049","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,9,5]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Whether daytime napping may be a risk factor for dementia, in addition to nighttime sleep disturbances, remains unclear. This study investigated longitudinal associations of napping characteristics with incident dementia among U.S. older adults.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Data came from the National Health and Aging Trends Study (NHATS). Napping characteristics were self-reported in a sleep module at round 3 (2013), including (1) frequency (non-napper, infrequent, frequent); (2) intention (non-napper, intentional, unintentional); (3) duration (non-napper, \u226430\u2009minutes, &amp;gt;30\u2009minutes). Dementia classification was established at each round using a validated algorithm, and possible\/probable dementia served as our outcome. We included 995 participants free of possible\/probable dementia at round 3 who were followed up to round 13 (2023). Discrete-time complementary log-log models were used for hazard ratio (HR) of incident possible\/probable dementia associated with napping characteristics, adjusting for demographic, health, and sleep variables (duration, daytime sleepiness, and obstructive sleep apnea risk).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>When compared to non-nappers, frequent nappers had 1.48 times the hazard of developing incident possible\/probable dementia (95% confidence interval [CI]: 1.14, 1.94). Unintentional napping was associated with incident possible\/probable dementia (HR = 1.39, 95% CI: 1.06, 1.81). No associations were found for infrequent or intentional napping. Napping \u226430\u2009minutes was associated with possible\/probable dementia (HR = 1.40, 95% CI: 1.06, 1.85), but the association of napping &amp;gt;30\u2009minutes was attenuated with additional adjustment for sleep variables (HR = 1.28, 95% CI: 0.96, 1.69).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Daytime napping may be a modifiable risk factor for dementia if supported by further evidence. Future studies with detailed napping characteristics and longer follow-up are needed.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/gerona\/glag208","type":"journal-article","created":{"date-parts":[[2026,8,22]],"date-time":"2026-08-22T11:43:39Z","timestamp":1787399019000},"source":"Crossref","is-referenced-by-count":0,"title":["Napping characteristics and incident dementia: results from the National Health and Aging Trends Study"],"prefix":"10.1093","volume":"81","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4532-4469","authenticated-orcid":false,"given":"Kening","family":"Jiang","sequence":"first","affiliation":[{"name":"Department of Mental Health, Johns Hopkins Bloomberg School of Public Health , Baltimore, Maryland,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alden L","family":"Gross","sequence":"additional","affiliation":[{"name":"Department of Mental Health, Johns Hopkins Bloomberg School of Public Health , 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