{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,18]],"date-time":"2026-06-18T19:57:47Z","timestamp":1781812667213,"version":"3.54.5"},"reference-count":50,"publisher":"Oxford University Press (OUP)","issue":"6","license":[{"start":{"date-parts":[[2026,4,9]],"date-time":"2026-04-09T00:00:00Z","timestamp":1775692800000},"content-version":"vor","delay-in-days":98,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"name":"National Institute on Aging of the National Institute of Health","award":["K01AG06361"],"award-info":[{"award-number":["K01AG06361"]}]},{"name":"National Institute on Aging of the National Institute of Health","award":["R01AG082856"],"award-info":[{"award-number":["R01AG082856"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,5,7]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background and Objectives<\/jats:title>\n                    <jats:p>We examined geographic variation in the risk of potentially preventable hospitalization (PPH) among individuals with Alzheimer\u2019s disease and related dementias.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Research Design and Methods<\/jats:title>\n                    <jats:p>In this cross-sectional study, we analyzed a 20% random sample of 2017\u20132018 traditional Medicare claims (n\u2009=\u200967,110), merged with the Area Health Resource File and National Neighborhood Data Archive. Multivariable generalized estimating equation models adjusted for age, sex, frailty index, rurality (metropolitan; micropolitan; rural), and county-level numbers of primary care physicians and hospitals. PPH risk was assessed for the overall cohort, residents of highly disadvantaged areas, and those in rural-or-micropolitan areas.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>One-third of hospitalizations were PPHs. Urinary tract infection (33.8%), heart failure (25.7%), and pneumonia (18.6%) accounted for 78% of all PPHs. Unadjusted PPH rates were higher in highly disadvantaged areas (23.9%) compared to low-disadvantaged areas (20.6%). In the overall sample, Black and Hispanic individuals had higher odds of PPH than White individuals, as did those in highly disadvantaged areas compared to low-disadvantaged areas. Among highly disadvantaged urban and rural-or-micropolitan area residents, adjusted PPH rates were 23% and 27%, respectively. Odds of PPH were markedly higher in highly disadvantaged rural-or-micropolitan areas compared with low-disadvantaged areas. Racial\/ethnic disparities diminished in these areas, while risk increased for female adults compared with male adults.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Discussion and Implications<\/jats:title>\n                    <jats:p>The highest PPH risk occurred in highly disadvantaged rural-or-micropolitan areas. Although racial\/ethnic disparities were attenuated in these populations, the overall PPH risk was elevated. Policy efforts should prioritize expanding access to ambulatory care in disadvantaged areas.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/geroni\/igag035","type":"journal-article","created":{"date-parts":[[2026,4,7]],"date-time":"2026-04-07T11:26:20Z","timestamp":1775561180000},"source":"Crossref","is-referenced-by-count":0,"title":["When context matters: social disparities in preventable hospitalizations among Medicare beneficiaries with dementia"],"prefix":"10.1093","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1158-8498","authenticated-orcid":false,"given":"Viktoryia A","family":"Kalesnikava","sequence":"first","affiliation":[{"name":"Center for Social Epidemiology and Population Health, Department of Epidemiology, University of Michigan School of Public Health , Ann Arbor, Michigan,","place":["United States"]},{"name":"Research Center for Group Dynamics, Institute for Social Research, University of Michigan , Ann Arbor, Michigan,","place":["United 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