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The target sample size was 8500 respondents: 3500 people aged 16\u201324 years and 1000 respondents each from five further age groups (25\u201334, 35\u201344, 45\u201354, 55\u201364, 65 years or more).<\/jats:p><\/jats:sec><jats:sec><jats:title>Main outcome measures<\/jats:title><jats:p>Primary outcomes: Emotional abuse, neglect, physical abuse, sexual abuse, exposure to domestic violence during childhood, assessed with the Juvenile Victimization Questionnaire\u2010R2 Adapted Version (Australian Child Maltreatment Study). Secondary outcomes: selected mental disorder diagnoses (Mini International Neuropsychiatric Interview, MINI), selected physical health conditions, health risk behaviours, health service use.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The demographic characteristics of the ACMS sample were similar to those of the Australian population in 2016 with respect to gender, Indigenous status, region and remoteness category of residence, and marital status, but larger proportions of participants were born in Australia, lived in areas of higher socio\u2010economic status, had tertiary qualifications, and had income greater than $1250 per week. Population weights were derived to adjust for these differences. Associations between the number of calls required to recruit participants and maltreatment rates and health outcomes were not statistically significant.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The ACMS provides the first reliable estimates of the prevalence of each type of child maltreatment in Australia. These estimates, and those of associated mental health and health risk behaviours reported in this supplement can inform policy and practice initiatives for reducing the prevalence of child maltreatment and its consequences. Our benchmark study also provides baseline data for repeated waves of the ACMS that will assess the effectiveness of these initiatives.<\/jats:p><\/jats:sec>","DOI":"10.5694\/mja2.51869","type":"journal-article","created":{"date-parts":[[2023,4,2]],"date-time":"2023-04-02T14:01:35Z","timestamp":1680444095000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":29,"title":["The Australian Child Maltreatment Study (<scp>ACMS<\/scp>), a national survey of the prevalence of child maltreatment and its correlates: methodology"],"prefix":"10.5694","volume":"218","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5354-8710","authenticated-orcid":false,"given":"Divna M","family":"Haslam","sequence":"first","affiliation":[{"name":"Queensland University of Technology  Brisbane QLD"},{"name":"Parenting and Family Support Centre, the University of Queensland  Brisbane QLD"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4700-1425","authenticated-orcid":false,"given":"David M","family":"Lawrence","sequence":"additional","affiliation":[{"name":"Curtin University  Perth WA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0421-0016","authenticated-orcid":false,"given":"Ben","family":"Mathews","sequence":"additional","affiliation":[{"name":"Queensland University of Technology  Brisbane QLD"},{"name":"Bloomberg School of Public Health Johns Hopkins University  Baltimore MD United States of America"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0268-8243","authenticated-orcid":false,"given":"Daryl J","family":"Higgins","sequence":"additional","affiliation":[{"name":"Institute of Child Protection Studies Australian Catholic University  Melbourne VIC"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna","family":"Hunt","sequence":"additional","affiliation":[{"name":"Curtin University  Perth WA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0744-0688","authenticated-orcid":false,"given":"James G","family":"Scott","sequence":"additional","affiliation":[{"name":"Child Health Research Centre, the University of Queensland  Brisbane QLD"},{"name":"QIMR Berghofer Medical Research Institute  Brisbane QLD"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael P","family":"Dunne","sequence":"additional","affiliation":[{"name":"Queensland University of Technology  Brisbane QLD"},{"name":"Institute for Community Health Research Hue University  Hue City Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Holly E","family":"Erskine","sequence":"additional","affiliation":[{"name":"The University of Queensland  Brisbane QLD"},{"name":"Queensland Centre for Mental Health Research  Brisbane QLD"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7897-7821","authenticated-orcid":false,"given":"Hannah J","family":"Thomas","sequence":"additional","affiliation":[{"name":"QIMR Berghofer Medical Research Institute  Brisbane QLD"},{"name":"Queensland Centre for Mental Health Research  Brisbane QLD"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Finkelhor","sequence":"additional","affiliation":[{"name":"Crimes against Children Research Center University of New Hampshire  Durham NH United States of America"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9742-1957","authenticated-orcid":false,"given":"Rosana","family":"Pacella","sequence":"additional","affiliation":[{"name":"Institute for Lifecourse Development University of Greenwich  London United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Franziska","family":"Meinck","sequence":"additional","affiliation":[{"name":"University of Edinburgh  Edinburgh United Kingdom"},{"name":"University of the Witwatersrand Johannesburg  Johannesburg South Africa"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eva","family":"Malacova","sequence":"additional","affiliation":[{"name":"QIMR Berghofer Medical Research Institute  Brisbane QLD"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2023,4,2]]},"reference":[{"key":"e_1_2_10_1_1","doi-asserted-by":"publisher","DOI":"10.1111\/jcpp.13550"},{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1177\/1524838018801334"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chiabu.2020.104829"},{"key":"e_1_2_10_4_1","unstructured":"Royal Commission into Institutional Responses to Child Sexual Abuse. 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