“…Use of aspirin, β-blockers, and rapid reperfusion therapy can reduce mortality in appropriate patients (3, 4); however, with the current high adherence to medication and time to reperfusion, these strategies explain only 6% of the variation in RSMRs after AMI among hospitals (5). Studies have also identified hospital characteristics that are associated with risk-adjusted mortality, such as teaching status (6), AMI volume (7, 8), safety net status (9, 10), and geographic and urban or rural location (11–15). Together, however, these factors leave much of the hospital-level variation in RSMRs unexplained (16).…”