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The aim of the current study was to evaluate the modelled population cost\u2010effectiveness of cognitive dissonance (CD), a school\u2010based preventive intervention for EDs, in the Australian health care context.<\/jats:p><\/jats:sec><jats:sec><jats:title>Method<\/jats:title><jats:p>A population\u2010based Markov model was developed to estimate the cost per disability adjusted life\u2010year (DALY) averted by CD relative to no intervention. We modelled the cases of AN and BN that could be prevented over a 10\u2010year time horizon in each study arm and the subsequent reduction in DALYs associated with this. The target population was 15\u201018 year old secondary school girls with high body\u2010image concerns. This study only considered costs of the health sector providing services and not costs to individuals. Multivariate probabilistic and one\u2010way sensitivity analyses were conducted to test model assumptions.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Findings showed that the mean incremental cost\u2010effectiveness ratio at base\u2010case for the intervention was $103,980 per DALY averted with none of the uncertainty iterations falling below the threshold of AUD$50,000 per DALY averted. The evaluation was most sensitive to estimates of participant rates with higher rates associated with more favourable results. The intervention would become cost\u2010effective (84% chance) if the effect of the intervention lasted up to 5 years.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>As modelled, school\u2010based CD intervention is not a cost\u2010effective preventive intervention for AN and BN. Given the burden of EDs, understanding how to improve participation rates is an important opportunity for future research.<\/jats:p><\/jats:sec>","DOI":"10.1002\/eat.22703","type":"journal-article","created":{"date-parts":[[2017,3,22]],"date-time":"2017-03-22T09:01:47Z","timestamp":1490173307000},"page":"834-841","source":"Crossref","is-referenced-by-count":22,"title":["The modelled cost\u2010effectiveness of cognitive dissonance for the prevention of anorexia nervosa and bulimia nervosa in adolescent girls in Australia"],"prefix":"10.1002","volume":"50","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9442-6824","authenticated-orcid":false,"given":"Long Khanh\u2010Dao","family":"Le","sequence":"first","affiliation":[{"name":"Deakin Health Economics, School of Health and Social Development Deakin University Melbourne Victoria Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jan J.","family":"Barendregt","sequence":"additional","affiliation":[{"name":"Epigear International Pty Ltd  Queensland Australia"},{"name":"School of Public Health University of Queensland Brisbane Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Phillipa","family":"Hay","sequence":"additional","affiliation":[{"name":"School of Medicine and Centre for Health Research Western Sydney University  NSW Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Susan M.","family":"Sawyer","sequence":"additional","affiliation":[{"name":"Centre for Adolescent Health, Royal Children's Hospital Melbourne Victoria Australia"},{"name":"Department of Paediatrics University of Melbourne Melbourne Victoria Australia"},{"name":"Murdoch Children's Research Institute Melbourne Victoria Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Susan J.","family":"Paxton","sequence":"additional","affiliation":[{"name":"School of Psychology and Public Health La Trobe University Melbourne Victoria Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cathrine","family":"Mihalopoulos","sequence":"additional","affiliation":[{"name":"Deakin Health Economics, School of Health and Social Development Deakin University Melbourne Victoria Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2017,3,21]]},"reference":[{"key":"e_1_2_8_2_1","first-page":"1","article-title":"A systematic review of the health\u2010related quality of life and economic burdens of anorexia nervosa, bulimia nervosa, and binge eating disorder","author":"\u00c1gh T.","year":"2016","journal-title":"Eating and Weight Disorders\u2010Studies on Anorexia, Bulimia and Obesity"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1001\/archgenpsychiatry.2011.74"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.brat.2013.09.012"},{"key":"e_1_2_8_5_1","volume-title":"Health expenditure Australia 2012\u20132013","author":"Australian Institue of Health and Welfare","year":"2015"},{"key":"e_1_2_8_6_1","unstructured":"Barendregt J.EpiGearXL \u2010 Integral User Guide. 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