{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T21:57:03Z","timestamp":1788991023545,"version":"build-2803163510"},"reference-count":44,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"3","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Stroke"],"published-print":{"date-parts":[[2019,3]]},"abstract":"<jats:sec>\n                    <jats:title>Background and Purpose\u2014<\/jats:title>\n                    <jats:p>China bears a heavy burden of stroke because of its large population of elderly people and the propensity for stroke. Previous studies have examined the association between air pollution and stroke mortality or hospital admission. However, the global evidence for adverse effects of air pollution on survival after stroke is scarce.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods\u2014<\/jats:title>\n                    <jats:p>\n                      We used the first national hospital-based prospective registry cohort of stroke in China, which included 12\u2009291 ischemic stroke patients who visited hospitals during 2007 to 2008. All patients were followed for 1-year poststroke. Deaths during the follow-up period were recorded. Participants\u2019 3-year prestroke exposures to ambient PM\n                      <jats:sub>1<\/jats:sub>\n                      , PM\n                      <jats:sub>2.5<\/jats:sub>\n                      , PM\n                      <jats:sub>10<\/jats:sub>\n                      (particulate matter with aerodynamic diameters \u22641, \u22642.5, and \u226410 \u03bcm, respectively) and NO\n                      <jats:sub>2<\/jats:sub>\n                      (nitrogen dioxide) were estimated by machine learning algorithms with satellite remote sensing, land use information, and meteorological data. Cox proportional hazards models were used to examine the association between air pollution and survival after ischemic stroke.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results\u2014<\/jats:title>\n                    <jats:p>\n                      In total, 1649 deaths were identified during the 1-year follow-up period. After controlling for potential confounders, significant associations were observed between exposure to PM\n                      <jats:sub>1<\/jats:sub>\n                      and PM\n                      <jats:sub>2.5<\/jats:sub>\n                      and incident fatal ischemic stroke. The corresponding hazard ratios and 95% CIs associated with 10 \u00b5g\/m\n                      <jats:sup>3<\/jats:sup>\n                      increase in PM\n                      <jats:sub>1<\/jats:sub>\n                      and PM\n                      <jats:sub>2.5<\/jats:sub>\n                      were 1.05 (1.02\u20131.09) and 1.03 (1.00\u20131.06), respectively. No significant association was observed for PM\n                      <jats:sub>10<\/jats:sub>\n                      or NO\n                      <jats:sub>2<\/jats:sub>\n                      (hazard ratios and 95% CIs, 1.01 [1.00\u20131.03] and 1.03 [0.99\u20131.06], respectively). Higher hazard ratios (and 95% CIs) were observed for male, elderly and obese individuals.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions\u2014<\/jats:title>\n                    <jats:p>\n                      Prestroke exposure to PM\n                      <jats:sub>1<\/jats:sub>\n                      and PM\n                      <jats:sub>2.5<\/jats:sub>\n                      was associated with increased incident fatal ischemic stroke in the year following an ischemic stroke in China. Improved air quality may be beneficial for people to recover from stroke.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1161\/strokeaha.118.023264","type":"journal-article","created":{"date-parts":[[2019,2,11]],"date-time":"2019-02-11T05:00:30Z","timestamp":1549861230000},"page":"563-570","update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":80,"title":["Long-Term Exposure to Air Pollution and Survival After Ischemic Stroke"],"prefix":"10.1161","volume":"50","author":[{"given":"Gongbo","family":"Chen","sequence":"first","affiliation":[{"name":"From the Department of Global Health, School of Health Sciences, Wuhan University, China (G.C.)"},{"name":"Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia (G.C., S.L., M.J.A., 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