Document Detail

Risk for postterm delivery after previous postterm delivery.
MedLine Citation:
PMID:  17346537     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: We examined the hypothesis that the risk for subsequent postterm birth is increased in women with an initial postterm birth. STUDY DESIGN: We performed a population-based cohort study of Missouri births (1989-1997) to assess the recurrence of postterm birth using the Missouri Department of Health's maternally linked database. RESULTS: A total of 368,633 births were evaluated, of which 7.6% were postterm (>42 weeks of gestation). Black mothers had a lower risk for all (adjusted odds ratio [OR], 0.70; 95% CI, 0.67-0.73) or recurrent (adjusted OR, 0.73; 95% CI, 0.67-0.79) postterm birth. Maternal education of <12 years (adjusted OR, 1.51; 95% CI, 1.41-1.62), indices of low socioeconomic status, and maternal body mass index >35 kg/m2 (adjusted OR, 1.23; 95% CI, 1.11-1.37) were associated with increased risk for recurrent postterm birth. Mothers with an initial postterm birth were at increased risk for postterm birth (OR, 1.88; 95% CI, 1.79-1.97) in subsequent pregnancies, independent of race. CONCLUSION: Among mothers who deliver postterm, there is a significant risk for subsequent postterm births. This increased risk suggests that common factors (genetic or other) influence the likelihood of abnormal parturition timing.
Zachary A-F Kistka; Lisanne Palomar; Sarah E Boslaugh; Michael R DeBaun; Emily A DeFranco; Louis J Muglia
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of obstetrics and gynecology     Volume:  196     ISSN:  1097-6868     ISO Abbreviation:  Am. J. Obstet. Gynecol.     Publication Date:  2007 Mar 
Date Detail:
Created Date:  2007-03-09     Completed Date:  2007-05-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370476     Medline TA:  Am J Obstet Gynecol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  241.e1-6     Citation Subset:  AIM; IM    
Washington University School of Medicine, Center for Preterm Birth Research, St Louis, MO 63110, USA.
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MeSH Terms
Cohort Studies
Pregnancy, Prolonged / epidemiology*
Risk Factors

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