Population
The patient inclusion period was from January 1, 2015 to December 31, 2018. The inclusion criteria were: women who underwent a non-elective cesarean section at >24 weeks of gestation, with no documented opposition to participate in research. Patients received a letter to inform them that their data would be collected and if they wanted, they could oppose to the data collection. The exclusion criteria were: patients undergoing elective cesarean section, and women who were under legal protection (patients under guardianship)