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Labor dystocia and its association with interpregnancy interval
Bao-Ping Zhu1, Violanda Grigorescu, Thu Le
1Office of Epidemiology, Missouri Department of Health and Senior Services, Jefferson City, MO 65102, USA. BaoPing.Zhu@dhss.mo.gov
American Journal of Obstetrics and Gynecology
|April 26, 2006
Summary
Labor dystocia is common, affecting over 20% of births. Longer interpregnancy intervals increase the risk of labor dystocia in multiparous mothers, particularly for singleton births.
Area of Science:
- Obstetrics and Gynecology
- Reproductive Health
- Perinatal Epidemiology
Background:
- Labor dystocia, a common complication, impacts birth outcomes.
- The relationship between interpregnancy interval and labor dystocia requires further investigation.
Purpose of the Study:
- To determine the prevalence of labor dystocia.
- To assess the association between interpregnancy interval and labor dystocia.
Main Methods:
- Utilized linked birth and hospital discharge data (1994-2002) for Michigan infants.
- Identified labor dystocia using ICD-9-CM codes, classifying it as functional or mechanical.
- Employed logistic regression to analyze labor dystocia in relation to interpregnancy interval, controlling for covariates.
Main Results:
- Labor dystocia occurred in 20.8% of births (11.1% functional, 12.5% mechanical).
- Dystocia was more frequent in first births and mechanical dystocia in multiple births.
- A dose-response relationship was observed between longer interpregnancy intervals and increased labor dystocia risk in multiparous mothers' singleton births.
Conclusions:
- Labor dystocia is a prevalent obstetric complication.
- Increasing interpregnancy intervals are associated with a higher risk of labor dystocia in multiparous mothers.
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