Document Detail

Effect of coitus at term on length of gestation, induction of labor, and mode of delivery.
MedLine Citation:
PMID:  16816067     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To determine coital incidence at term and to estimate its effect on labor onset and mode of delivery. METHODS: Healthy women with uncomplicated pregnancies and established gestational age were recruited to keep a diary of coital activity from 36 weeks of gestation until birth and to answer a short questionnaire. Two hundred women with complete coital diaries were available for analysis. Outcome measures include coitus, postdate pregnancy (defined as pregnancy beyond the estimated date of confinement), gestational length of at least 41 weeks, labor induction at 41 weeks of gestation, and mode of delivery RESULTS: Reported sexual intercourse at term was influenced by a woman's perception of coital safety, her ethnicity, and her partner's age. After multivariable logistic regression analysis controlling for the women's ethnicity, education, occupation, perception of coital safety, and partner's age, coitus at term remained independently associated with reductions in postdate pregnancy (adjusted odds ratio [AOR] 0.28, 95% confidence interval [CI] 0.13-0.58, P = .001), gestational length of at least 41 weeks (AOR 0.10, 95% CI 0.04-0.28, P < .001), and requirement for labor induction at 41 weeks of gestation (AOR 0.08, 95% CI 0.03-0.26, P < .001). At 39 weeks of gestation, 5 (95% CI 3.3-10.3) couples needed to have intercourse to avoid one woman having to undergo labor induction at 41 weeks of gestation. Coitus at term had no significant effect on operative delivery (adjusted P = .15). CONCLUSION: Reported sexual intercourse at term was associated with earlier onset of labor and reduced requirement for labor induction at 41 weeks. LEVEL OF EVIDENCE: II-2.
Peng Chiong Tan; Anggeriana Andi; Noor Azmi; M N Noraihan
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Obstetrics and gynecology     Volume:  108     ISSN:  0029-7844     ISO Abbreviation:  Obstet Gynecol     Publication Date:  2006 Jul 
Date Detail:
Created Date:  2006-07-03     Completed Date:  2006-08-10     Revised Date:  2009-10-26    
Medline Journal Info:
Nlm Unique ID:  0401101     Medline TA:  Obstet Gynecol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  134-40     Citation Subset:  AIM; IM    
Department of Obstetrics and Gynecology, University of Malaya, Kuala Lumpur, Malaysia.
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MeSH Terms
Coitus / physiology*
Gestational Age
Labor, Induced / statistics & numerical data*
Labor, Obstetric* / physiology
Longitudinal Studies
Pregnancy Outcome
Pregnancy Trimester, Third
Sexual Abstinence / ethnology

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