Association between hospital accreditation and healthcare providers’ perceptions of patient safety culture: a longitudinal study in a healthcare network in Brazil

Our results suggest an improvement in patient safety culture within this network of private hospitals in Brazil from 2014 to 2022. While accreditation appears to be associated with fostering a culture of safety over time, our study does not establish a causal relationship. Additionally, non-accredited hospitals tended to report fewer adverse events, which may indicate underreporting and missed opportunities for healthcare system improvement through adverse event analysis.