{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,6]],"date-time":"2026-04-06T13:17:11Z","timestamp":1775481431143,"version":"3.50.1"},"reference-count":18,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2013,11,18]],"date-time":"2013-11-18T00:00:00Z","timestamp":1384732800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Obstet and Gynaecol"],"published-print":{"date-parts":[[2014,2]]},"abstract":"Abstract<\/jats:title>Aim<\/jats:title>The aim of this study was to better characterize the nature of abruptio placentae (AP<\/jats:styled-content>) with regard to the timing of onset.<\/jats:p><\/jats:sec>Material and Methods<\/jats:title>Prevalence and prospective risk of AP<\/jats:styled-content> according to gestational week (GW<\/jats:styled-content>) were determined among 293\u2009899 women who gave birth to singleton infants at and after GW<\/jats:styled-content> 30. The prospective risk of AP<\/jats:styled-content> at gestational week N<\/jats:styled-content> was defined as the number of all women who experienced an AP<\/jats:styled-content> at \u2265GW N<\/jats:styled-content> divided by the number of all women who gave birth at \u2265GW N<\/jats:styled-content>.<\/jats:p><\/jats:sec>Results<\/jats:title>AP<\/jats:styled-content> developed in 2649 (0.90%) women. The prevalence of AP<\/jats:styled-content> (6.7% among women who gave birth at GW<\/jats:styled-content> 30\u201333) sharply decreased with advancing GW<\/jats:styled-content> at delivery to 0.9% for GW<\/jats:styled-content> 37 and 0.1% for \u2265GW<\/jats:styled-content> 42. The highest prospective risk of AP<\/jats:styled-content>, 9 per 1000 women at GW<\/jats:styled-content> 30, decreased linearly with advancing gestation to 1 per 1000 women at \u2265GW<\/jats:styled-content> 42. AP<\/jats:styled-content> accounted for 4.7% (1591\/33\u2009725) of all preterm births at GW <\/jats:styled-content><37, while prevalence of AP<\/jats:styled-content> was 0.41% (1058\/260\u2009174) among term births. Preterm AP<\/jats:styled-content> accounted for 60.1% (1591\/2649) of all AP<\/jats:styled-content>.<\/jats:p><\/jats:sec>Conclusion<\/jats:title>Our figures indicate that AP<\/jats:styled-content> is more common in preterm births than in term birth and may be helpful for better understanding the epidemiology of this condition.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jog.12175","type":"journal-article","created":{"date-parts":[[2013,11,19]],"date-time":"2013-11-19T04:55:08Z","timestamp":1384836908000},"page":"369-374","source":"Crossref","is-referenced-by-count":9,"title":["Prospective risk of abruptio placentae"],"prefix":"10.1111","volume":"40","author":[{"given":"Mamoru","family":"Morikawa","sequence":"first","affiliation":[{"name":"Department of Obstetrics Hokkaido University Graduate School of Medicine Sapporo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takahiro","family":"Yamada","sequence":"additional","affiliation":[{"name":"Department of Obstetrics 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