{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T17:54:21Z","timestamp":1791568461016,"version":"4.3.4"},"reference-count":56,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2020,8,28]],"date-time":"2020-08-28T00:00:00Z","timestamp":1598572800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Intl J Eating Disorders"],"published-print":{"date-parts":[[2020,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>This systematic review and meta\u2010analysis examine the contribution of duration to treatment outcome for eating disorders.<\/jats:p><\/jats:sec><jats:sec><jats:title>Method<\/jats:title><jats:p>Studies (<jats:italic>n<\/jats:italic> = 31) were identified that examined associations (<jats:italic>r<\/jats:italic>) between duration and 45 different outcomes. We were unable to extract <jats:italic>r<\/jats:italic> for seven studies (9 outcomes) and extracted <jats:italic>r<\/jats:italic> for 36 outcomes across 24 studies (2,349 participants). Indicators of treatment outcome were heterogeneous and thus a series of different meta\u2010analyses, aimed at increasing homogeneity, were conducted.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>First, we examined the average effect size for one primary eating disorder related outcome from each of the 24 studies. There was no association between duration and treatment outcome (<jats:italic>r<\/jats:italic> = .05, 95% CI: \u2212.03:.13), with high heterogeneity. Second, we conducted three sub\u2010group analyses to explore possible sources of heterogeneity (diagnosis: anorexia nervosa versus bulimia nervosa; nature of the outcome: binary versus continuous; or type of outcome: binary indicator of recovery, eating disorder psychopathology, weight gain). There was no significant moderation or associations between duration and outcome (ranging from .02\u2013.08), with low to medium heterogeneity. Third, two stand\u2010alone analyses examined outcomes related to weight gain (<jats:italic>n<\/jats:italic> = 8) and eating disorder psychopathology (<jats:italic>n<\/jats:italic> = 5), with nonsignificant <jats:italic>r<\/jats:italic>s of .23\/\u2212.06, respectively. High levels of heterogeneity were present.<\/jats:p><\/jats:sec><jats:sec><jats:title>Discussion<\/jats:title><jats:p>Duration did not influence treatment outcome across any of our meta\u2010analyses. Increasing homogeneity and power will allow more stable estimates of the impact of duration on outcome to be calculated; to this end, future treatment studies should include outcome related to weight gain (anorexia nervosa) and improvements in eating disorder psychopathology.<\/jats:p><\/jats:sec>","DOI":"10.1002\/eat.23373","type":"journal-article","created":{"date-parts":[[2020,8,28]],"date-time":"2020-08-28T15:45:42Z","timestamp":1598629542000},"page":"1761-1773","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":61,"title":["Relationship between eating disorder duration and treatment outcome: Systematic review and meta\u2010analysis"],"prefix":"10.1002","volume":"53","author":[{"given":"Marcela","family":"Radunz","sequence":"first","affiliation":[{"name":"Blackbird Initiative \u00d3rama Research Institute, Flinders University  Adelaide South Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ella","family":"Keegan","sequence":"additional","affiliation":[{"name":"Blackbird Initiative \u00d3rama Research Institute, Flinders University  Adelaide South Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ivana","family":"Osenk","sequence":"additional","affiliation":[{"name":"Blackbird Initiative \u00d3rama Research Institute, Flinders University  Adelaide South Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4402-770X","authenticated-orcid":false,"given":"Tracey D.","family":"Wade","sequence":"additional","affiliation":[{"name":"Blackbird Initiative \u00d3rama Research Institute, Flinders University  Adelaide South Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,8,28]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1176\/appi.ajp.157.8.1302"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1001\/jamapsychiatry.2014.1025"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/eat.23246"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/eat.22173"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/eat.20546"},{"key":"e_1_2_7_7_1","first-page":"1337","article-title":"Duration of untreated eating disorder and relationship to outcomes: A systematic review of the literature","volume":"53","author":"Austin A.","year":"2020","journal-title":"International Journal of Eating Disorders"},{"key":"e_1_2_7_8_1","volume-title":"Comprehensive meta\u2010analysis (version 3.3)","author":"Borenstein M.","year":"2005"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/9780470743386"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/eat.22715"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1080\/10503307.2012.717308"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1186\/s40337-015-0057-z"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.brat.2016.11.006"},{"key":"e_1_2_7_14_1","doi-asserted-by":"publisher","DOI":"10.1002\/eat.22773"},{"key":"e_1_2_7_15_1","doi-asserted-by":"publisher","DOI":"10.1002\/erv.1045"},{"key":"e_1_2_7_16_1","doi-asserted-by":"publisher","DOI":"10.1037\/0033-2909.112.1.155"},{"key":"e_1_2_7_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/0022-3999(96)00535-1"},{"key":"e_1_2_7_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.brat.2016.07.002"},{"key":"e_1_2_7_19_1","volume-title":"Meta\u2010analyses in mental health research: A practical guide","author":"Cuijpers P.","year":"2016"},{"key":"e_1_2_7_20_1","doi-asserted-by":"publisher","DOI":"10.1002\/eat.22560"},{"key":"e_1_2_7_21_1","doi-asserted-by":"publisher","DOI":"10.1002\/eat.20764"},{"key":"e_1_2_7_22_1","doi-asserted-by":"publisher","DOI":"10.1002\/1098-108X(199309)14:2<135::AID-EAT2260140203>3.0.CO;2-D"},{"key":"e_1_2_7_23_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0924-9338(01)00608-3"},{"key":"e_1_2_7_24_1","doi-asserted-by":"publisher","DOI":"10.1002\/eat.20215"},{"key":"e_1_2_7_25_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.psychres.2018.11.068"},{"key":"e_1_2_7_26_1","doi-asserted-by":"publisher","DOI":"10.1097\/YCO.0000000000000191"},{"key":"e_1_2_7_27_1","doi-asserted-by":"publisher","DOI":"10.1186\/s40337-018-0229-8"},{"key":"e_1_2_7_28_1","doi-asserted-by":"publisher","DOI":"10.1177\/0004867412450469"},{"key":"e_1_2_7_29_1","doi-asserted-by":"publisher","DOI":"10.1002\/sim.1186"},{"key":"e_1_2_7_30_1","doi-asserted-by":"publisher","DOI":"10.1007\/s40519-013-0005-3"},{"key":"e_1_2_7_31_1","doi-asserted-by":"publisher","DOI":"10.1017\/S003329170800442X"},{"key":"e_1_2_7_32_1","doi-asserted-by":"publisher","DOI":"10.1001\/archpsyc.56.1.63"},{"key":"e_1_2_7_33_1","doi-asserted-by":"publisher","DOI":"10.1176\/appi.ajp.2016.15101333"},{"key":"e_1_2_7_34_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cpr.2016.11.001"},{"key":"e_1_2_7_35_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.brat.2014.03.006"},{"key":"e_1_2_7_36_1","doi-asserted-by":"publisher","DOI":"10.1002\/erv.2492"},{"key":"e_1_2_7_37_1","doi-asserted-by":"publisher","DOI":"10.1037\/0022-0167.52.4.629"},{"key":"e_1_2_7_38_1","doi-asserted-by":"publisher","DOI":"10.7326\/0003-4819-151-4-200908180-00135"},{"key":"e_1_2_7_39_1","doi-asserted-by":"publisher","DOI":"10.1097\/PAP.0000000000000072"},{"key":"e_1_2_7_40_1","doi-asserted-by":"publisher","DOI":"10.1186\/1471-2288-9-2"},{"key":"e_1_2_7_41_1","doi-asserted-by":"publisher","DOI":"10.1037\/ccp0000319"},{"key":"e_1_2_7_42_1","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1098-108X(200005)27:4<428::AID-EAT7>3.0.CO;2-Y"},{"key":"e_1_2_7_43_1","doi-asserted-by":"publisher","DOI":"10.1002\/erv.2367"},{"key":"e_1_2_7_44_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00787-009-0024-9"},{"key":"e_1_2_7_45_1","doi-asserted-by":"publisher","DOI":"10.1093\/ajcn\/87.4.810"},{"key":"e_1_2_7_46_1","doi-asserted-by":"publisher","DOI":"10.1348\/000711007X255327"},{"key":"e_1_2_7_47_1","doi-asserted-by":"publisher","DOI":"10.1002\/eat.20830"},{"key":"e_1_2_7_48_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00787-008-0706-8"},{"key":"e_1_2_7_49_1","doi-asserted-by":"publisher","DOI":"10.1111\/ped.13194"},{"key":"e_1_2_7_50_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0033291713000949"},{"key":"e_1_2_7_51_1","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1098-108X(199701)21:1<17::AID-EAT2>3.0.CO;2-6"},{"key":"e_1_2_7_52_1","volume-title":"Transdiagnostic response to family\u2010based treatment for eating disorders in adolescents: Predictors of outcome","author":"Utzinger L.","year":"2013"},{"key":"e_1_2_7_53_1","doi-asserted-by":"publisher","DOI":"10.1002\/eat.22411"},{"key":"e_1_2_7_54_1","doi-asserted-by":"publisher","DOI":"10.1080\/00048670802653356"},{"key":"e_1_2_7_55_1","doi-asserted-by":"publisher","DOI":"10.1002\/erv.2443"},{"key":"e_1_2_7_56_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.psychres.2016.07.002"},{"key":"e_1_2_7_57_1","doi-asserted-by":"publisher","DOI":"10.1002\/eat.22651"}],"container-title":["International Journal of Eating Disorders"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/eat.23373","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/eat.23373","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/eat.23373","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,9,4]],"date-time":"2023-09-04T06:23:38Z","timestamp":1693808618000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/eat.23373"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,8,28]]},"references-count":56,"journal-issue":{"issue":"11","published-print":{"date-parts":[[2020,11]]}},"alternative-id":["10.1002\/eat.23373"],"URL":"https:\/\/doi.org\/10.1002\/eat.23373","archive":["Portico"],"relation":{},"ISSN":["0276-3478","1098-108X"],"issn-type":[{"value":"0276-3478","type":"print"},{"value":"1098-108X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,8,28]]},"assertion":[{"value":"2020-04-13","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2020-08-12","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2020-08-28","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}