In-hospital adverse events provide a window into the state of patient safety. A new analysis of AHRQ Quality and Safety Review System (QSRS) data shows that hospitalized Medicare patients have experienced a decline in adverse events since the peak of the COVID-19 pandemic, with a 13% to 15% reduction in adverse events in 2022 compared to 2021. The analysis showed that in 2022, 6.2% of Medicare patients experienced at least one adverse event per hospital stay, a reduction from 7.1% in 2021.