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Recurrence risk of preterm birth in subsequent twin pregnancy after preterm singleton delivery.
MedLine Citation:
PMID:  23078576     Owner:  NLM     Status:  Publisher    
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; DOI: 10.1111/j.1471-0528.2012.03504.x. 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 (<37 weeks of gestation) in subsequent twin pregnancy. Results  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 3.8-6.6). 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. Conclusion  Preterm birth of a singleton gestation is associated with an increased risk of spontaneous preterm birth in a subsequent twin pregnancy.
Jm Schaaf; Mhp Hof; Bwj Mol; A Abu-Hanna; Acj Ravelli
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-19
Journal Detail:
Title:  BJOG : an international journal of obstetrics and gynaecology     Volume:  -     ISSN:  1471-0528     ISO Abbreviation:  BJOG     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100935741     Medline TA:  BJOG     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 The Authors BJOG An International Journal of Obstetrics and Gynaecology © 2012 RCOG.
Department of Medical Informatics Department of Obstetrics and Gynaecology Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Academic Medical Centre, Amsterdam, the Netherlands.
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