Appropriate Delivery Project: Impact of Simulation Training on the Increase in Vaginal Births in Hospitals in Brazil.

Objective: This study aimed to analyze the relationship between the participation of professionals in simulation-based training and an increase in the rate of vaginal deliveries.

Methods: This retrospective observational study analyzed professionals' participation in high-fidelity simulation training during the pilot phase of the Appropriate Delivery Project, spanning from May 21, 2015 to May 21, 2016, along with the rates of vaginal deliveries across various hospitals. Data for participation by nurses and physicians were examined using a gamma distribution model to discern the predictors influencing the changes in the percentage of vaginal births.