{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T13:21:34Z","timestamp":1790947294005,"version":"4.1.0"},"reference-count":5,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2025,9,10]],"date-time":"2025-09-10T00:00:00Z","timestamp":1757462400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100007566","name":"Royal College of Emergency Medicine","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100007566","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Emerg Medicine Australasia"],"published-print":{"date-parts":[[2025,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>To estimate the proportion of Emergency Department (ED) headache patients without neurological features who are diagnosed with a serious secondary headache cause.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Unplanned secondary analysis of HEAD Study\/HEAD Colombia data. Patients without a known history of cerebral conditions and with a normal neurological assessment were included. The outcome of interest was the proportion of patients diagnosed with a serious secondary headache cause.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>One hundred ninety\u2010one patients were diagnosed with a serious secondary headache cause (191\/3951, 4.8%, 95% CI 4.2%\u20135.5%).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Absence of neurological features alone cannot be used to reliably exclude a serious secondary headache cause in ED patients.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/1742-6723.70138","type":"journal-article","created":{"date-parts":[[2025,9,10]],"date-time":"2025-09-10T08:19:54Z","timestamp":1757492394000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["What Proportion of Emergency Department Headache Patients With Normal Neurology Have a Serious Secondary Headache Cause? A\n                    <scp>HEAD<\/scp>\n                    Study Report"],"prefix":"10.1111","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4655-5023","authenticated-orcid":false,"given":"Anne Maree","family":"Kelly","sequence":"first","affiliation":[{"name":"Joseph Epstein Centre for Emergency Medicine Research@Western Health  Sunshine Victoria Australia"},{"name":"Department of Critical Care, Melbourne Medical School The University of Melbourne  Parkville Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kevin H.","family":"Chu","sequence":"additional","affiliation":[{"name":"Emergency and Trauma Centre, Royal Brisbane and Women's Hospital  Herston Queensland Australia"},{"name":"Faculty of Medicine University of Queensland  St Lucia Queensland Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Win Sen","family":"Kuan","sequence":"additional","affiliation":[{"name":"Emergency Medicine Department, National University Hospital National University Health System  Singapore Singapore"},{"name":"Department of Surgery, Yong Loo Lin School of Medicine National University of Singapore  Singapore Singapore"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gerben","family":"Keijzers","sequence":"additional","affiliation":[{"name":"Department of Emergency Medicine Gold Coast University Hospital  Gold Coast Queensland Australia"},{"name":"Faculty of Health Sciences and Medicine Bond University  Gold Coast Queensland Australia"},{"name":"School of Medicine Griffith University  Gold Coast Queensland Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Frances B.","family":"Kinnear","sequence":"additional","affiliation":[{"name":"Emergency &amp; Children's Services, the Prince Charles Hospital, Chermside  Queensland Australia"},{"name":"Department of Medicine University of Queensland  St Lucia Queensland Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alejandro","family":"Cardozo\u2010Ocampo","sequence":"additional","affiliation":[{"name":"Emergency Medicine Physician, Emergency Department Instituto Neurologico de Colombia  Medellin Colombia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"name":"the HEAD Study and HEAD Colombia Investigators","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,9,10]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.annemergmed.2019.07.009"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/head.14230"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-0038-1677023"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1212\/WNL.0000000000006697"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1136\/emermed-2023-213461"}],"container-title":["Emergency Medicine Australasia"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/1742-6723.70138","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,23]],"date-time":"2025-10-23T06:58:39Z","timestamp":1761202719000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/1742-6723.70138"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,9,10]]},"references-count":5,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2025,10]]}},"alternative-id":["10.1111\/1742-6723.70138"],"URL":"https:\/\/doi.org\/10.1111\/1742-6723.70138","archive":["Portico"],"relation":{},"ISSN":["1742-6731","1742-6723"],"issn-type":[{"value":"1742-6731","type":"print"},{"value":"1742-6723","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,9,10]]},"assertion":[{"value":"2025-02-26","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-09-04","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-09-10","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e70138"}}