{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,1]],"date-time":"2026-02-01T22:29:24Z","timestamp":1769984964653,"version":"3.49.0"},"reference-count":32,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2020,1,8]],"date-time":"2020-01-08T00:00:00Z","timestamp":1578441600000},"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":[[2020,4]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>To evaluate whether a history of spontaneous early\u2010term birth (37<jats:sup>+0<\/jats:sup>\u201338<jats:sup>+6<\/jats:sup>\u00a0weeks of gestation) in the previous singleton pregnancy is a risk factor for preterm birth (PTB) in a subsequent twin pregnancy.<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>Retrospective cohort study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Settings<\/jats:title><jats:p>Two French university hospitals (2006\u20132016).<\/jats:p><\/jats:sec><jats:sec><jats:title>Population<\/jats:title><jats:p>All women who delivered twins from 24<jats:sup>+0<\/jats:sup>\u00a0weeks after a preceding singleton pregnancy birth at 37<jats:sup>+0<\/jats:sup> to 41<jats:sup>+6<\/jats:sup>\u00a0weeks.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Multivariate logistic regression analysis of association between twin PTB and a previous spontaneous singleton early\u2010term birth.<\/jats:p><\/jats:sec><jats:sec><jats:title>Main outcome measures<\/jats:title><jats:p>Twin PTB rate before 37, 34 and 32\u00a0weeks of gestation.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Among 618 twin pregnancies, 270 were born preterm, 92 of them with a preceding spontaneous singleton early\u2010term birth. The univariate analysis showed a significantly higher risk of twin PTB before 37, 34 and 32\u00a0weeks among those 92 women compared with those with a full\u2010 or late\u2010term birth in their previous singleton pregnancy. This association remained significant after logistic regression (odds ratio [OR] between 2.42 and 3.88). The secondary analysis, restricted to the twin pregnancies with spontaneous PTB found similar results, with a risk of PTB before 37, 34 and 32\u00a0weeks significantly higher among women with a previous spontaneous singleton early\u2010term birth, including after logistic regression analysis (OR between 3.51 and 3.56).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>A preceding spontaneous singleton early\u2010term birth is a strong and easily identified risk factor for PTB in twin pregnancies.<\/jats:p><\/jats:sec><jats:sec><jats:title>Tweetable abstract<\/jats:title><jats:p>Spontaneous \u2018early\u2010term\u2019 birth of a singleton is a significant risk factor for future preterm births in twin pregnancies.<\/jats:p><\/jats:sec>","DOI":"10.1111\/1471-0528.16071","type":"journal-article","created":{"date-parts":[[2019,12,21]],"date-time":"2019-12-21T12:38:23Z","timestamp":1576931903000},"page":"591-598","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Risk of preterm birth in a twin pregnancy after an early\u2010term birth in the preceding singleton pregnancy: a retrospective cohort study"],"prefix":"10.1111","volume":"127","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7814-6945","authenticated-orcid":false,"given":"P","family":"Berveiller","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynaecology Poissy\/Saint\u2010Germain Hospital Poissy France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A","family":"Rousseau","sequence":"additional","affiliation":[{"name":"EA 7285 Paris Saclay University Montigny\u2010Le\u2010Bretonneux France"},{"name":"Department of 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