{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T16:02:31Z","timestamp":1791216151255,"version":"4.1.0"},"reference-count":33,"publisher":"BMJ","issue":"7","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Occup Environ Med"],"accepted":{"date-parts":[[2010,9,14]]},"published-print":{"date-parts":[[2011,7]]},"abstract":"<jats:sec><jats:title>Objectives<\/jats:title><jats:p>High and low ambient temperatures are associated with large numbers of deaths annually. Many studies show higher mortalities during heatwaves. However, such effects are rarely explicitly incorporated in models of temperature and mortality, although dehydration followed by cardiovascular stress is more likely to occur. The authors aim to establish time-series models in which the effects of persistent extreme temperature and temperature in general can be disentangled.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The authors established time-series Poisson regression models based on cause-specific mortality and age-stratified mortality in Stockholm County (Sweden), 1990\u20132002, adjusting for time trends and potential confounders, and studied the effects of temperature and persistence of extreme temperature.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Persistent extremely high temperature was associated with additional deaths, and the risk of death increased significantly per day of extended heat exposure. Extreme exposure to heat was associated with higher death rates in adults and for cardiovascular causes of death, compared with a rise in temperature. Warmer temperatures increase daily mortality from natural causes, while decreasing colder temperatures increase the risk of cardiovascular deaths. Furthermore, the impact of warm and cold temperatures decreases within the season, while the impact of persistent extremely high temperatures remains similar throughout the summer.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The authors found the mortality impact of persistence of extreme high temperatures to increase proportionally to the length of the heat episode in addition to the effects of temperature based on the temperature\u2013mortality relationship. Thus, the additional effect of persistent extreme heat was found to be important to incorporate for models of mortality related to ambient temperatures to avoid negatively biased attributed risks, especially for cardiovascular mortality. Moreover, the effects associated with non-extreme temperatures may decline as the pool of fragile individuals shrink as well as due to acclimatisation\/adaptation. However, a similar decline was not observed for the effects associated with extreme heat episodes.<\/jats:p><\/jats:sec>","DOI":"10.1136\/oem.2010.058818","type":"journal-article","created":{"date-parts":[[2010,10,21]],"date-time":"2010-10-21T02:08:52Z","timestamp":1287626932000},"page":"531-536","source":"Crossref","is-referenced-by-count":105,"title":["Mortality related to temperature and persistent extreme temperatures: a study of cause-specific and age-stratified mortality"],"prefix":"10.1136","volume":"68","author":[{"given":"Joacim","family":"Rockl\u00f6v","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kristie","family":"Ebi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bertil","family":"Forsberg","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2010,10,20]]},"reference":[{"key":"2024052300390473000_68.7.531.1","doi-asserted-by":"publisher","DOI":"10.1097\/JOM.0b013e318173e122"},{"key":"2024052300390473000_68.7.531.2","doi-asserted-by":"publisher","DOI":"10.1093\/ije\/dyn086"},{"key":"2024052300390473000_68.7.531.3","doi-asserted-by":"publisher","DOI":"10.1093\/aje\/kwn266"},{"key":"2024052300390473000_68.7.531.4","doi-asserted-by":"publisher","DOI":"10.1097\/EDE.0b013e318176bfcd"},{"key":"2024052300390473000_68.7.531.5","doi-asserted-by":"publisher","DOI":"10.1097\/01.ede.0000239732.50999.8f"},{"key":"2024052300390473000_68.7.531.6","doi-asserted-by":"crossref","first-page":"859","DOI":"10.1289\/ehp.02110859","article-title":"The effect of weather on respiratory and cardiovascular deaths in 12 US cities","volume":"110","author":"Braga","year":"2002","journal-title":"Environ Health Perspect"},{"key":"2024052300390473000_68.7.531.7","doi-asserted-by":"publisher","DOI":"10.1136\/oem.2007.033175"},{"key":"2024052300390473000_68.7.531.8","doi-asserted-by":"publisher","DOI":"10.1136\/oem.2006.029017"},{"key":"2024052300390473000_68.7.531.9","doi-asserted-by":"publisher","DOI":"10.1093\/aje\/kwg096"},{"key":"2024052300390473000_68.7.531.10","doi-asserted-by":"publisher","DOI":"10.1007\/s00420-007-0173-4"},{"key":"2024052300390473000_68.7.531.11","doi-asserted-by":"publisher","DOI":"10.1175\/1520-0450(1984)023<1674:AUSOAT>2.0.CO;2"},{"key":"2024052300390473000_68.7.531.12","doi-asserted-by":"publisher","DOI":"10.1097\/00001648-200111000-00014"},{"key":"2024052300390473000_68.7.531.13","doi-asserted-by":"publisher","DOI":"10.1177\/1403494807088458"},{"key":"2024052300390473000_68.7.531.14","doi-asserted-by":"publisher","DOI":"10.1136\/jech.56.5.367"},{"key":"2024052300390473000_68.7.531.15","doi-asserted-by":"publisher","DOI":"10.1097\/01.ede.0000239688.70829.63"},{"key":"2024052300390473000_68.7.531.16","doi-asserted-by":"publisher","DOI":"10.1136\/oem.2003.012047"},{"key":"2024052300390473000_68.7.531.17","doi-asserted-by":"crossref","unstructured":"Rockl\u00f6v J Forsberg B . Comparing approaches for studying the effects of climate extremes\u2014a case study of hospital admissions in Sweden during an extremely warm summer. 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