{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,27]],"date-time":"2026-10-27T00:21:31Z","timestamp":1793060491835,"version":"4.5.0"},"reference-count":37,"publisher":"BMJ","issue":"10","funder":[{"DOI":"10.13039\/501100000925","name":"National Health and Medical Research Council","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000925","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Perinatal and Maternal Mortality Review Committee"}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Open"],"accepted":{"date-parts":[[2017,8,30]]},"published-print":{"date-parts":[[2017,10]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>Estimate the incidence of placenta accreta and describe risk factors, clinical practice and perinatal outcomes.<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>Case\u2013control study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Setting<\/jats:title><jats:p>Sites in Australia and New Zealand with at least 50 births per year.<\/jats:p><\/jats:sec><jats:sec><jats:title>Participants<\/jats:title><jats:p>Cases were women giving birth (\u226520 weeks or fetus \u2265400\u2009g) who were diagnosed with placenta accreta by antenatal imaging, at operation or by pathology specimens between 2010 and 2012. Controls were two births immediately prior to a case. A total of 295 cases were included and 570 controls.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Data were collected using the Australasian Maternity Outcomes Surveillance System.<\/jats:p><\/jats:sec><jats:sec><jats:title>Primary and secondary outcome measures<\/jats:title><jats:p>Incidence, risk factors (eg, prior caesarean section (CS), maternal age) and clinical outcomes of placenta accreta (eg CS, hysterectomy and death).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The incidence of placenta accreta was 44.2\/100 000 women giving birth (95%\u2009CI 39.4 to 49.5); however, this may overestimated due to the case definition used. In primiparous women, an increased odds of placenta accreta was observed in older women (adjusted OR (AOR) women\u226540\u2009vs &lt;30: 19.1, 95%\u2009CI 4.6 to 80.3) and current multiple birth (AOR: 6.1, 95%\u2009CI 1.1 to 34.1). In multiparous women, independent risk factors were prior CS (AOR \u22652\u2009prior sections vs 0: 13.8, 95%\u2009CI 7.4 to 26.1) and current placenta praevia (AOR: 36.3, 95%\u2009CI 14.0 to 93.7). There were two maternal deaths (case fatality rate 0.7%).<\/jats:p><jats:p>Women with placenta accreta were more likely to have a caesarean section (AOR: 4.6, 95%\u2009CI 2.7 to 7.6) to be admitted to the intensive care unit (ICU)\/high dependency unit (AOR: 46.1, 95%\u2009CI 22.3 to 95.4) and to have a hysterectomy (AOR: 209.0, 95%\u2009CI 19.9 to 875.0). Babies born to women with placenta accreta were more likely to be preterm, be admitted to neonatal ICU and require resuscitation.<\/jats:p><\/jats:sec>","DOI":"10.1136\/bmjopen-2017-017713","type":"journal-article","created":{"date-parts":[[2017,10,6]],"date-time":"2017-10-06T00:30:33Z","timestamp":1507249833000},"page":"e017713","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":79,"title":["Incidence, risk factors and perinatal outcomes for placenta accreta in Australia and New Zealand: a case\u2013control study"],"prefix":"10.1136","volume":"7","author":[{"given":"Cynthia M","family":"Farquhar","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhuoyang","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1694-1142","authenticated-orcid":false,"given":"Sarah","family":"Lensen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Claire","family":"McLintock","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wendy","family":"Pollock","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael J","family":"Peek","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Ellwood","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marian","family":"Knight","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7454-3011","authenticated-orcid":false,"given":"Caroline SE","family":"Homer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Geraldine","family":"Vaughan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alex","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elizabeth","family":"Sullivan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2017,10,5]]},"reference":[{"key":"2024051614473877000_7.10.e017713.1","doi-asserted-by":"publisher","DOI":"10.1016\/j.placenta.2008.04.008"},{"key":"2024051614473877000_7.10.e017713.2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2004.12.074"},{"key":"2024051614473877000_7.10.e017713.3","doi-asserted-by":"crossref","first-page":"648","DOI":"10.1111\/j.1471-0528.2008.02037.x","article-title":"Optimal management strategies for placenta accreta","volume":"116","author":"Eller","year":"2009","journal-title":"BJOG Int J Obstet Gynaecol"},{"key":"2024051614473877000_7.10.e017713.4","doi-asserted-by":"crossref","first-page":"141","DOI":"10.1515\/jpm-2012-0219","article-title":"Placenta accreta and the risk of adverse maternal and neonatal outcomes","volume":"41","author":"Balayla","year":"2013","journal-title":"J Perinat Med"},{"key":"2024051614473877000_7.10.e017713.5","first-page":"1","article-title":"Births: preliminary data for 2004","volume":"54","author":"Hamilton","year":"2005","journal-title":"Natl Vital Stat Rep"},{"key":"2024051614473877000_7.10.e017713.6","doi-asserted-by":"crossref","first-page":"450","DOI":"10.1111\/ajo.12525","article-title":"Every caesarean section must count","volume":"56","author":"Ellwood","year":"2016","journal-title":"Aust N Z J Obstet Gynaecol"},{"key":"2024051614473877000_7.10.e017713.7","doi-asserted-by":"crossref","first-page":"352","DOI":"10.1186\/s12884-015-0792-9","article-title":"Amniotic fluid embolism: an Australian-New Zealand population-based study","volume":"15","author":"McDonnell","year":"2015","journal-title":"BMC Pregnancy Childbirth"},{"key":"2024051614473877000_7.10.e017713.8","doi-asserted-by":"crossref","first-page":"322","DOI":"10.1186\/s12884-015-0693-y","article-title":"Maternal super-obesity and perinatal outcomes in Australia: a national population-based cohort study","volume":"15","author":"Sullivan","year":"2015","journal-title":"BMC Pregnancy Childbirth"},{"key":"2024051614473877000_7.10.e017713.9","unstructured":"PMMRC. 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