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We sought to identify factors associated with mode of delivery in a peri-urban Indian population with a high cesarean section rate. Poisson regression with robust error variance was applied to model factors associated with cesarean compared to vaginal delivery in a prospective, preconception pregnancy cohort study in Telangana State, India. Adjusted relative risks and 95% confidence intervals from multivariable models are presented. Among 1164 singleton births between 2010 and 2015, 46% were delivered by cesarean. In multiparous women ( n = 674), prior cesarean delivery (4.2, 3.2-5.6), prior twin delivery (1.4, 1.1-1.9), diagnosis of hypertension (1.4, 1.0-2.0), or preeclampsia (3.5, 2.1-5.7) in a prior pregnancy independently increased the risk of cesarean. Prepregnancy overweight/obesity (1.4, 1.0-1.9), a composite of prenatal complications (1.3, 1.0-1.7), a composite of labor complications (1.5, 1.0-2.3), nonreassuring fetal heart rate (2.3, 1.3-4.1), and breech position (2.6, 1.4-5.0) also increased the cesarean risk. Among nulliparous women ( n = 233), cephalo-pelvic disproportion (1.9, 1.2-3.0), a composite of labor complications (2.9, 1.8-4.9), and breech position (3.4, 1.9-6.2) increased the risk of cesarean. The high rate of cesarean delivery in this peri-urban Indian population is attributed to history of pregnancy complications, history of prior cesarean, prepregnancy body mass index, and medical indications at delivery.

Maternal Factors Associated with Mode of Delivery in a Population with a High Cesarean Section Rate