{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T03:21:41Z","timestamp":1772767301015,"version":"3.50.1"},"reference-count":16,"publisher":"Wiley","issue":"13","license":[{"start":{"date-parts":[[2012,10,19]],"date-time":"2012-10-19T00:00:00Z","timestamp":1350604800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["BJOG"],"published-print":{"date-parts":[[2012,12]]},"abstract":"<jats:p><jats:italic>Please cite this paper as:<\/jats:italic> Schaaf J, Hof M, Mol B, Abu\u2010Hanna A, Ravelli A. Recurrence risk of preterm birth in subsequent twin pregnancy after preterm singleton delivery.BJOG 2012;119:1624\u20131629.<\/jats:p><jats:p><jats:bold>Objective\u2002<\/jats:bold> To determine the risk of preterm birth in a subsequent twin pregnancy after previous singleton preterm birth.<\/jats:p><jats:p><jats:bold>Design\u2002<\/jats:bold> Cohort study.<\/jats:p><jats:p><jats:bold>Setting\u2002<\/jats:bold> Nationwide study in the Netherlands.<\/jats:p><jats:p><jats:bold>Population\u2002<\/jats:bold> In all, 4071 nulliparous women who had a singleton delivery followed by a subsequent twin delivery between the years 1999 and 2007 were studied.<\/jats:p><jats:p><jats:bold>Methods\u2002<\/jats:bold> Outcome of subsequent twin pregnancy of women with a history of preterm singleton delivery was compared with pregnancy outcome of women with a history of term singleton delivery. First deliveries were subdivided into iatrogenic and spontaneous preterm deliveries. Furthermore analyses were performed by subgroups for gestational age at the time of singleton delivery.<\/jats:p><jats:p><jats:bold>Main outcome measure\u2002<\/jats:bold> Spontaneous preterm birth (&lt;37\u2003weeks of gestation) in subsequent twin pregnancy.<\/jats:p><jats:p><jats:bold>Results\u2002<\/jats:bold> In the index singleton pregnancy, preterm birth occurred in 232 (5.7%) of 4071 women. The risk of subsequent twin preterm birth was significantly higher after previous singleton preterm delivery (56.9 versus 20.9%; odds ratio 5.0; 95% CI 3.8\u20136.6). Risk of subsequent twin preterm birth was dependent on the severity of previous singleton preterm birth and was highest after preceding spontaneous instead of iatrogenic singleton preterm delivery.<\/jats:p><jats:p><jats:bold>Conclusion\u2002<\/jats:bold> Preterm birth of a singleton gestation is associated with an increased risk of spontaneous preterm birth in a subsequent twin pregnancy.<\/jats:p>","DOI":"10.1111\/j.1471-0528.2012.03504.x","type":"journal-article","created":{"date-parts":[[2012,10,19]],"date-time":"2012-10-19T09:47:13Z","timestamp":1350640033000},"page":"1624-1629","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":38,"title":["Recurrence risk of preterm birth in subsequent twin pregnancy after preterm singleton delivery"],"prefix":"10.1111","volume":"119","author":[{"given":"JM","family":"Schaaf","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"MHP","family":"Hof","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"BWJ","family":"Mol","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A","family":"Abu\u2010Hanna","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"ACJ","family":"Ravelli","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2012,10,19]]},"reference":[{"key":"e_1_2_11_2_2","doi-asserted-by":"publisher","DOI":"10.1080\/14767050600965882"},{"key":"e_1_2_11_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.siny.2004.04.002"},{"key":"e_1_2_11_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(02)11476-0"},{"key":"e_1_2_11_5_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1471-0528.2005.00575.x"},{"key":"e_1_2_11_6_2","doi-asserted-by":"publisher","DOI":"10.1097\/01.AOG.0000158124.96300.c7"},{"key":"e_1_2_11_7_2","doi-asserted-by":"publisher","DOI":"10.1093\/aje\/154.4.307"},{"key":"e_1_2_11_8_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1471-0528.2011.03010.x"},{"key":"e_1_2_11_9_2","doi-asserted-by":"publisher","DOI":"10.1001\/jama.283.12.1591"},{"key":"e_1_2_11_10_2","doi-asserted-by":"publisher","DOI":"10.2105\/AJPH.88.2.233"},{"key":"e_1_2_11_11_2","doi-asserted-by":"publisher","DOI":"10.1080\/14767050802010206"},{"key":"e_1_2_11_12_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0029-7844(01)01466-1"},{"key":"e_1_2_11_13_2","doi-asserted-by":"publisher","DOI":"10.1055\/s-0028-1090592"},{"key":"e_1_2_11_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9378(98)70640-4"},{"key":"e_1_2_11_15_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jclinepi.2006.11.021"},{"key":"e_1_2_11_16_2","doi-asserted-by":"publisher","DOI":"10.3414\/ME0489"},{"key":"e_1_2_11_17_2","doi-asserted-by":"publisher","DOI":"10.1210\/jc.2004-0277"}],"container-title":["BJOG: An International Journal of Obstetrics &amp; Gynaecology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1111%2Fj.1471-0528.2012.03504.x","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/j.1471-0528.2012.03504.x","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,31]],"date-time":"2023-10-31T06:43:58Z","timestamp":1698734638000},"score":1,"resource":{"primary":{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/10.1111\/j.1471-0528.2012.03504.x"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2012,10,19]]},"references-count":16,"journal-issue":{"issue":"13","published-print":{"date-parts":[[2012,12]]}},"alternative-id":["10.1111\/j.1471-0528.2012.03504.x"],"URL":"https:\/\/doi.org\/10.1111\/j.1471-0528.2012.03504.x","archive":["Portico"],"relation":{},"ISSN":["1470-0328","1471-0528"],"issn-type":[{"value":"1470-0328","type":"print"},{"value":"1471-0528","type":"electronic"}],"subject":[],"published":{"date-parts":[[2012,10,19]]},"assertion":[{"value":"2012-10-19","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}