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Trends in absolute number and rates of MH<jats:sub>dx<\/jats:sub> presentations per 10\u2009000 population were assessed as differences (x\u2010fold) and annual growth rates (average and compound).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Increased presentation rates were observed for most diagnostic groups, except for mental retardation (F70\u2013F79) and mood disorders (F30\u2013F39). The greatest absolute increase was for psychoactive substance use\u2010related disorders (F10\u2013F19), and relative increase, unspecified mental disorder (F99). There was differentiation across jurisdictions regarding rates of and growth in presentations. In 2016\u201317, rates at least twice the national average were observed for psychoactive substance\u2010use (F10\u2013F19), schizophrenia and psychotic disorders (F20\u2013F29) and childhood and adolescence onset disorders (F90\u2013F98) in the Northern Territory, F90\u2013F98 in South Australia, personality disorders (F60\u2013F69) in Tasmania and unspecified mental disorder (F99) in New South Wales. The most marked growth was observed for F99 in New South Wales.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Between 2004\u201305 and 2016\u201317, rates of ED presentations increased across most MH diagnostic groups, but particularly psychoactive substance use\u2010related disorders. To reduce the need for MH crisis care in Australian EDs, strategies are required to reduce psychoactive substance use in the community, and policies may be needed to strengthen the capability of community MH services and primary care professionals to recognise, diagnose and treat earlier in the course of illness.<\/jats:p><\/jats:sec>","DOI":"10.1111\/1742-6723.13451","type":"journal-article","created":{"date-parts":[[2020,2,24]],"date-time":"2020-02-24T05:17:40Z","timestamp":1582521460000},"page":"190-201","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["Trend of emergency department presentations with a mental health diagnosis in Australia by diagnostic group, 2004\u201305 to 2016\u201317"],"prefix":"10.1111","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4807-5856","authenticated-orcid":false,"given":"Quang Nhat","family":"Tran","sequence":"first","affiliation":[{"name":"Menzies Institute for Medical Research University of Tasmania  Hobart Tasmania Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leonard G","family":"Lambeth","sequence":"additional","affiliation":[{"name":"Menzies Institute for Medical Research University of Tasmania  Hobart Tasmania Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3132-2745","authenticated-orcid":false,"given":"Kristy","family":"Sanderson","sequence":"additional","affiliation":[{"name":"Menzies Institute for Medical Research University of Tasmania  Hobart Tasmania Australia"},{"name":"School of Health Sciences University of East Anglia  Norwich UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0743-9561","authenticated-orcid":false,"given":"Barbara","family":"de Graaff","sequence":"additional","affiliation":[{"name":"Menzies Institute for Medical Research University of Tasmania  Hobart Tasmania Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8135-3136","authenticated-orcid":false,"given":"Monique","family":"Breslin","sequence":"additional","affiliation":[{"name":"Menzies Institute for Medical Research University of Tasmania  Hobart Tasmania Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emma J","family":"Huckerby","sequence":"additional","affiliation":[{"name":"Emergency Department, Royal Hobart Hospital Tasmanian Health Service, Tasmanian Government  Hobart Tasmania Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8890-1457","authenticated-orcid":false,"given":"Viet","family":"Tran","sequence":"additional","affiliation":[{"name":"Emergency Department, Royal Hobart Hospital Tasmanian Health Service, Tasmanian Government  Hobart Tasmania Australia"},{"name":"School of Medicine College of Health and Medicine, University of Tasmania  Hobart Tasmania Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1344-6672","authenticated-orcid":false,"given":"Amanda L","family":"Neil","sequence":"additional","affiliation":[{"name":"Menzies Institute for Medical Research University of Tasmania  Hobart Tasmania Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,2,23]]},"reference":[{"key":"e_1_2_8_2_1","first-page":"252","volume-title":"Health Care and Public Policy \u2010 An Australian Analysis","author":"Palmer GR","year":"2000"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1176\/ps.47.10.1079"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1176\/appi.ps.56.6.671"},{"key":"e_1_2_8_5_1","unstructured":"RuiP KangK AshmanJ. 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