Document Detail

Labor dystocia and its association with interpregnancy interval.
MedLine Citation:
PMID:  16635468     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The purpose of this study was to evaluate the prevalence of labor dystocia and its association with interpregnancy interval. STUDY DESIGN: We linked the birth data for Michigan infants who were born from 1994 to 2002 with the hospital discharge data. The International Classification of Diseases (9th revision, clinical modifications, ICD-9-CM) codes that indicate labor dystocia were identified by a physician panel and classified as functional and mechanical dystocia. We estimated the prevalence of labor dystocia and used stratified and logistic regression analyses to evaluate labor dystocia in relation to interpregnancy interval, controlling for other reproductive risk factors. RESULTS: Overall, 20.8% of the births involved labor dystocia (11.1% functional; 12.5% mechanical). Both functional and mechanical dystocia were more prevalent in first births than in subsequent births; mechanical dystocia was more prevalent in multiple births than in singleton births. In singleton births to multiparous mothers, labor dystocia was associated with the interpregnancy interval in a dose-response fashion. Compared with an interpregnancy interval of <2 years, the adjusted odds ratios that was associated with interpregnancy intervals of 2 to 3, 4 to 5, 6 to 7, 8 to 9, and 10+ years were 1.06 (95% CI, 1.04-1.08), 1.15 (95% CI, 1.12-1.17), 1.25 (95% CI, 1.21-1.29), 1.31 (95% CI, 1.26-1.37), and 1.50 (95% CI, 1.45-1.56), respectively, when we controlled for other reproductive risk factors. Functional dystocia was associated more strongly with interpregnancy interval than mechanical dystocia. CONCLUSION: Labor dystocia is common. In singleton births to multiparous mothers, labor dystocia increased with interpregnancy interval.
Bao-Ping Zhu; Violanda Grigorescu; Thu Le; Mei Lin; Glenn Copeland; Maurice Barone; George Turabelidze
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Publication Detail:
Type:  Journal Article     Date:  2006-04-25
Journal Detail:
Title:  American journal of obstetrics and gynecology     Volume:  195     ISSN:  1097-6868     ISO Abbreviation:  Am. J. Obstet. Gynecol.     Publication Date:  2006 Jul 
Date Detail:
Created Date:  2006-07-03     Completed Date:  2006-07-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370476     Medline TA:  Am J Obstet Gynecol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  121-8     Citation Subset:  AIM; IM    
Office of Epidemiology, Missouri Department of Health and Senior Services, Jefferson City, MO 65102, USA.
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MeSH Terms
Birth Weight
Dystocia / epidemiology*
Infant, Newborn
Logistic Models
Maternal Age
Michigan / epidemiology
Prenatal Care
Risk Factors
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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