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Predictors of Success of External Cephalic Version and Cephalic Presentation at Birth Among 1253 Women With Noncephalic Presentation Using Logistic Regression and Classification Tree Analyses

delivery rates. IOL at 40 weeks was associated with an increased use of regional anesthesia compared to expectant management (47.2% vs. 30.3%, P< 0.05) after bivariate analysis, and IOL at 37 weeks was associated with an increased rate of postpartum hemorrhage (27% vs. 14.5%, P< 0.05). After controlling for key confounders, the reduction in postpartum hemorrhage for expectantly managed labor (odds ratio, 0.373; 95% confidence interval, 0.1630.835) was the only significant difference between the IOL and expectantly managed groups. In a traditional comparison, cesarean delivery rates were higher in induced labor compared with expectantly managed labor at 38 weeks (23.9% vs. 6.7%) and 39 weeks (29.7% vs. 9%) but no significant difference was found at 37 or 40 weeks. These findings suggest the cesarean delivery rate is not affected by IOL in obese women at term. The risk of neonatal adverse events was not affected by IOL compared with expectant management. However, the rate of postpartum hemorrhage may increase with IOL.