Using the Robson 10-Group Classification System to Compare Cesarean Birth Utilization Between US Centers With and...

Area of Science:

• Obstetrics and Gynecology
• Maternal-Fetal Medicine
• Healthcare Quality Improvement

Background:

• The Robson 10-group classification system is a global standard for analyzing cesarean birth rates.
• Variations in cesarean birth rates exist across different healthcare settings and models of care.
• Understanding the impact of midwifery care on cesarean utilization is crucial for improving maternal health outcomes.

Purpose of the Study:

• To compare cesarean birth utilization in US birth centers with and without midwifery-led interprofessional care.
• To analyze cesarean rates within specific Robson classification categories.
• To evaluate the association between midwifery care and labor induction rates.

Main Methods:

• Utilized data from the National Institute of Child and Human Development Consortium on Safe Labor (2002-2008).
• Compared births in centers with interprofessional midwifery care (n=48,857) versus non-interprofessional centers (n=47,935).
• Classified births into Robson categories to calculate cesarean rates and contributions, adjusting for maternal comorbidities using logistic regression.

Main Results:

• Centers with midwifery care exhibited lower overall cesarean birth rates (26.1% vs 33.5%).
• Nulliparous women (Robson category 2) had reduced labor induction rates (11.1% vs 23.4%) in midwifery settings.
• Women with prior uterine scars (Robson category 5) had lower cesarean rates (73.8% vs 85.1%) with midwives.
• Cesarean rates for high-risk pregnancies (e.g., breech) were similar between groups.

Conclusions:

• Interprofessional care teams including midwives are linked to decreased labor induction and overall cesarean utilization.
• Midwifery care is associated with increased rates of vaginal birth after cesarean.
• Cesarean birth rates remain consistent for women with higher-risk pregnancies regardless of care model.