Document Detail

Primary mode of delivery and subsequent pregnancy.
MedLine Citation:
PMID:  16045518     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To investigate the relationship between primary mode of delivery and subsequent pregnancy and to compare the findings with a previous study conducted on an earlier cohort from the same population. DESIGN: Population cohort. SETTING: Aberdeen City, Scotland. POPULATION: Women who delivered their first singleton child in Aberdeen Maternity Hospital between 1980 and 1997. METHODS: Population-based data relating to the index and next pregnancy event, if any, were obtained from the Aberdeen Maternity Neonatal Databank. Subsequent pregnancy was compared across the three modes of delivery groups using log rank tests and Cox proportional hazards regression models. MAIN OUTCOME MEASURE: First subsequent pregnancy following index delivery. RESULTS: Women who delivered by caesarean section (CS) were less likely to have a subsequent pregnancy compared with those who had a spontaneous vaginal delivery (SVD), hazard ratio = 0.91 (95% CI 0.87, 0.95). This confirmed the findings of a previous study conducted on an earlier cohort of the same population. The median time to next pregnancy following CS was 36.3 months, 31.8 months following instrumental vaginal delivery (IVD) and 30.4 months following SVD. In contrast to the earlier study where women who had an instrumental delivery were found to be an intermediate group, we found no difference in subsequent pregnancy following IVD compared with SVD, HR = 1.0 (95% CI 0.96, 1.03). CONCLUSIONS: Following an initial delivery by CS, fewer women went on to have another pregnancy compared with SVD. The incidence of subsequent pregnancy is similar following instrumental and SVD.
J Mollison; M Porter; D Campbell; S Bhattacharya
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  BJOG : an international journal of obstetrics and gynaecology     Volume:  112     ISSN:  1470-0328     ISO Abbreviation:  BJOG     Publication Date:  2005 Aug 
Date Detail:
Created Date:  2005-07-27     Completed Date:  2005-09-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100935741     Medline TA:  BJOG     Country:  England    
Other Details:
Languages:  eng     Pagination:  1061-5     Citation Subset:  AIM; IM    
Department of Public Health, University of Aberdeen, Medical School, Foresterhill, Aberdeen, UK.
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MeSH Terms
Birth Intervals / statistics & numerical data
Cesarean Section / statistics & numerical data
Cohort Studies
Delivery, Obstetric / statistics & numerical data*
Pregnancy / statistics & numerical data*
Regression Analysis
Time Factors

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