{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T10:28:24Z","timestamp":1784629704005,"version":"3.55.0"},"reference-count":21,"publisher":"BMJ","issue":"7","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Open"],"accepted":{"date-parts":[[2016,6,9]]},"published-print":{"date-parts":[[2016,7]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>Knowledge about patients after calling for an ambulance is limited to subgroups, such as patients with cardiac arrest, myocardial infarction, trauma and stroke, while population-based studies including all diagnoses are few. We examined the diagnostic pattern and mortality among all patients brought to hospital by ambulance after emergency calls.<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>Registry-based cohort study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Setting and participants<\/jats:title><jats:p>We included patients brought to hospital in an ambulance dispatched after emergency calls during 2007\u20132014 in the North Denmark Region (580\u2005000 inhabitants). We reported hospital diagnosis according to the chapters of the International Classification of Diseases, 10th Edition (ICD-10), and studied death on days 1 and 30 after the call. Cohort characteristics and diagnoses were described, and the Kaplan-Meier method was used to estimate mortality and 95% CIs.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In total, 148\u2005757 patients were included, mean age 52.9 (SD 24.3) years. The most frequent ICD-10 diagnosis chapters were: \u2018injury and poisoning\u2019 (30.0%), and the 2 non-specific diagnosis chapters: \u2018symptoms and abnormal findings, not elsewhere classified\u2019 (17.5%) and \u2018factors influencing health status and contact with health services\u2019 (14.1%), followed by \u2018diseases of the circulatory system\u2019 (10.6%) and \u2018diseases of the respiratory system\u2019 (6.7%). The overall 1-day mortality was 1.8% (CI 1.7% to 1.8%) and 30-day mortality 4.7% (CI 4.6% to 4.8%). \u2018Diseases of the circulatory system\u2019 had the highest 1-day mortality of 7.7% (CI 7.3% to 8.1%) accounting for 1209 deaths. After 30\u2005days, the highest number of deaths were among circulatory diseases (2313), respiratory diseases (1148), \u2018symptoms and abnormal findings, not elsewhere classified\u2019 (1119) and \u2018injury and poisoning\u2019 (741), and 30\u2005days mortality in percentage was 14.7%, 11.6%, 4.3% and 1.7%, respectively.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Patients' diagnoses from hospital stay after calling 1-1-2 in this population-based study were distributed across all ICD-10 chapters. Mortality varied widely between diagnostic groups. Non-specific diagnoses accounted for one-third of the patients and contributed to mortality in terms of total number of deaths.<\/jats:p><\/jats:sec>","DOI":"10.1136\/bmjopen-2016-011558","type":"journal-article","created":{"date-parts":[[2016,7,5]],"date-time":"2016-07-05T01:48:59Z","timestamp":1467683339000},"page":"e011558","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":63,"title":["Diagnosis and mortality in prehospital emergency patients transported to hospital: a population-based and registry-based cohort study"],"prefix":"10.1136","volume":"6","author":[{"given":"Erika Frischknecht","family":"Christensen","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas Mulvad","family":"Larsen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Flemming B\u00f8gh","family":"Jensen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mette Dahl","family":"Bendtsen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Poul Anders","family":"Hansen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S\u00f8ren Paaske","family":"Johnsen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christian Fynbo","family":"Christiansen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2016,7,4]]},"reference":[{"key":"2024051609470157000_6.7.e011558.1","doi-asserted-by":"publisher","DOI":"10.1071\/AH09866"},{"key":"2024051609470157000_6.7.e011558.2","doi-asserted-by":"crossref","first-page":"574","DOI":"10.5694\/j.1326-5377.2011.tb03107.x","article-title":"The challenges of population ageing: accelerating demand for emergency ambulance services by older patients, 1995\u20132015","volume":"194","author":"Lowthian","year":"2011","journal-title":"Med J Aust"},{"key":"2024051609470157000_6.7.e011558.3","doi-asserted-by":"crossref","first-page":"181","DOI":"10.1007\/s10389-015-0675-6","article-title":"The demographic impact on the demand for emergency medical services in the urban and rural regions of Bavaria, 2012\u20132032","volume":"23","author":"Veser","year":"2015","journal-title":"J Public Health"},{"key":"2024051609470157000_6.7.e011558.4","doi-asserted-by":"crossref","first-page":"144","DOI":"10.1080\/10903120090941416","article-title":"Study design and outcomes in out-of-hospital emergency medicine research: a ten-year analysis","volume":"4","author":"Brice","year":"2000","journal-title":"Prehosp Emerg Care"},{"key":"2024051609470157000_6.7.e011558.5","unstructured":"GEOMED. European Emergency Data Research Network. 2006. http:\/\/www.eed-project.de\/html\/eed.htm (accessed 29 Dec 2015)."},{"key":"2024051609470157000_6.7.e011558.6","doi-asserted-by":"publisher","DOI":"10.1016\/j.resuscitation.2010.11.001"},{"key":"2024051609470157000_6.7.e011558.7","doi-asserted-by":"publisher","DOI":"10.1034\/j.1399-6576.2003.00042.x"},{"key":"2024051609470157000_6.7.e011558.8","unstructured":"World Health Organization. International Statistical Classification of Diseases and Related Health Problems 10th Revision. 2016. http:\/\/apps.who.int\/classifications\/icd10\/browse\/2016\/en (accessed 5 Feb 2016)."},{"key":"2024051609470157000_6.7.e011558.9","doi-asserted-by":"crossref","first-page":"449","DOI":"10.2147\/CLEP.S91125","article-title":"The Danish National Patient Registry: a review of content, data quality, and research potential","volume":"7","author":"Schmidt","year":"2015","journal-title":"Clin Epidemiol"},{"key":"2024051609470157000_6.7.e011558.10","doi-asserted-by":"publisher","DOI":"10.1001\/jama.2013.278483"},{"key":"2024051609470157000_6.7.e011558.11","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMoa1405796"},{"key":"2024051609470157000_6.7.e011558.12","doi-asserted-by":"publisher","DOI":"10.1016\/j.resuscitation.2014.11.002"},{"key":"2024051609470157000_6.7.e011558.13","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(05)67626-X"},{"key":"2024051609470157000_6.7.e011558.14","doi-asserted-by":"publisher","DOI":"10.1186\/1757-7241-16-7"},{"key":"2024051609470157000_6.7.e011558.15","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMoa1407024"},{"key":"2024051609470157000_6.7.e011558.16","doi-asserted-by":"publisher","DOI":"10.1016\/S1474-4422(13)70100-5"},{"key":"2024051609470157000_6.7.e011558.17","doi-asserted-by":"publisher","DOI":"10.1016\/j.jstrokecerebrovasdis.2014.06.030"},{"key":"2024051609470157000_6.7.e011558.18","doi-asserted-by":"crossref","first-page":"53","DOI":"10.1186\/1757-7241-21-53","article-title":"Implementing a nationwide criteria-based emergency medical dispatch system: a register-based follow-up study","volume":"21","author":"Andersen","year":"2013","journal-title":"Scand J Trauma Resusc Emerg Med"},{"key":"2024051609470157000_6.7.e011558.19","doi-asserted-by":"publisher","DOI":"10.1186\/1472-6963-14-380"},{"key":"2024051609470157000_6.7.e011558.20","doi-asserted-by":"crossref","first-page":"S39","DOI":"10.1016\/S0140-6736(15)00620-0","article-title":"Changes and trends of pre-hospital emergency disease spectrum in Beijing in 2003\u201312: a retrospective study","volume":"386","author":"Wang","year":"2015","journal-title":"Lancet"},{"key":"2024051609470157000_6.7.e011558.21","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejim.2014.06.017"}],"container-title":["BMJ Open"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bmjopen-2016-011558","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,5,16]],"date-time":"2024-05-16T16:47:13Z","timestamp":1715878033000},"score":1,"resource":{"primary":{"URL":"https:\/\/bmjopen.bmj.com\/lookup\/doi\/10.1136\/bmjopen-2016-011558"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,7]]},"references-count":21,"journal-issue":{"issue":"7","published-online":{"date-parts":[[2016,7,4]]},"published-print":{"date-parts":[[2016,7]]}},"alternative-id":["10.1136\/bmjopen-2016-011558"],"URL":"https:\/\/doi.org\/10.1136\/bmjopen-2016-011558","relation":{},"ISSN":["2044-6055","2044-6055"],"issn-type":[{"value":"2044-6055","type":"print"},{"value":"2044-6055","type":"electronic"}],"subject":[],"published":{"date-parts":[[2016,7]]}}}