Recurrence risk of preterm birth in subsequent twin pregnancy after preterm singleton delivery

• Published in: BJOG : an international journal of obstetrics and gynaecology 2012-12, Vol.119 (13), p.1624-1629
• Main Authors: Schaaf, JM, Hof, MHP, Mol, BWJ, Abu-Hanna, A, Ravelli, ACJ
• Format: Article
• Language: English
• Subjects: Adult; Biological and medical sciences; Cohort Studies; Counselling; Delivery, Obstetric - statistics & numerical data; Diseases of mother, fetus and pregnancy; Female; Gynecology. Andrology. Obstetrics; Humans; Medical Record Linkage; Medical sciences; Netherlands - epidemiology; Odds Ratio; Parity; Pregnancy; Pregnancy, Twin; Pregnancy. Fetus. Placenta; Premature birth; Premature Birth - epidemiology; Premature Birth - etiology; preterm birth; Recurrence; recurrence risk; Registries; Risk; Risk Factors; singleton pregnancy; twin pregnancy; Twins
• ISSN: 1470-0328; 1471-0528
• DOI: 10.1111/j.1471-0528.2012.03504.x

Please cite this paper as: Schaaf J, Hof M, Mol B, Abu‐Hanna A, Ravelli A. Recurrence risk of preterm birth in subsequent twin pregnancy after preterm singleton delivery.BJOG 2012;119:1624–1629. Objective  To determine the risk of preterm birth in a subsequent twin pregnancy after previous singleton preterm birth. Design  Cohort study. Setting  Nationwide study in the Netherlands. Population  In all, 4071 nulliparous women who had a singleton delivery followed by a subsequent twin delivery between the years 1999 and 2007 were studied. Methods  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. Main outcome measure  Spontaneous preterm birth (