6ER-025 Importance of appropriate before-and-after quasi-experimental design to evaluate the impact of antimicrobial stewardship programmes: comparative results using statistical hypothesis testing or interrupted time series analysis

Abstract

Background and importanceMost antimicrobial stewardship programmes (ASP) use a before-and-after research design, which has a high risk of bias. Efforts to enhance the conduct of these quasi-experimental studies are urgently...