Inter- and intrasite variability of mortality and stroke for sites performing both surgical and transcatheter aortic valve replacement for aortic valve stenosis in intermediate-risk patients

摘要

Objectives: Multisite procedure-based randomized trials may be confounded by performance variability and variability among sites. Therefore, we studied variability in mortality and stroke after patients were randomized to surgical (SAVR) or transcatheter aortic valve replacement (TAVR) in the Placement of Aortic Transcatheter Valves-2A (PARTNER-2A) randomized trial.