[Overview of induction of labor practices in France in 2015: results of the MEDIP population-based cohort].

Objective. - To describe induction of labor practices in France and to identify factors associated with the use of different methods.Methods. - The data came from the French prospective population-based cohort MEDIP (MEthodes de Declenchement et Issues Perinatales), including consecutively during one month in 2015 all women with induction of labor and a live fetus in 7 perinatal networks. The characteristics of women, maternity units, gestational age, Bishop's score, decision mode, indication and methods of labor induction were described. Factors associated with the use of different methods were sought in univariate analyzes.Results. - The rate of induction of labor during the study was 21% and 3042 women were included (95.9% participation rate). The two main indications were prolonged pregnancy (28.7%) and premature rupture of the membranes (25.4%). More than one-third of women received intravenous oxytocin in first method, 57.3% prostaglandins, 4.5% balloon catheter and 1.4% another method. Among the prostaglandins, the vaginal device of dinoprostone was the most used (71.6%) then the gel (20.7%) and the vaginal misoprostol (6.7%). Women with a balloon were more often of higher body mass index and multiparous with scarred uterus. The balloon and misoprostol were mainly used in university public hospitals.Conclusions. - The evolution of induction of labor methods, due to new data from the literature and the development of new drugs or devices, invites to regularly repeat population-based studies on induction of labor. (C) 2019 Elsevier Masson SAS. All rights reserved.