Validity of clinical and ultrasound variables to predict the risk of cesarean delivery after induction of labor.

Objective: To evaluate a previously described score to predict the risk of cesarean delivery after induction of labor.

Methods: We conducted a multicenter prospective study among women at 36 weeks of gestation or more undergoing induction of labor in the maternity units of Geneva, Switzerland, and Novi Sad, Serbia. Before induction, we calculated the risk score for cesarean delivery including data on maternal height, body mass index, parity, and transvaginal ultrasonographic cervical length.