b'122021 CARES Annual Report The Cardiac Arrest Registry toEnhance Survival (CARES)In 2004, the Centers for Disease Control and PreventionCARES began data collection in Atlanta, with nearly (CDC) established the Cardiac Arrest Registry to Enhance1,500 cases captured in 2006. The program has since Survival (CARES) in collaboration with the Departmentexpanded to include 30 state-based registries (Alabama, of Emergency Medicine at the Emory University SchoolAlaska, California, Colorado, Connecticut, Delaware, of Medicine. CARES was developed to help communitiesFlorida, Hawaii, Illinois, Kentucky, Maine, Maryland, determine standard outcome measures for out-of- Michigan, Minnesota, Mississippi, Missouri, Montana, hospital cardiac arrest (OHCA), by linking the threeNebraska, New York, North Carolina, Ohio, Oregon, sources of information that define the continuum ofPennsylvania, Rhode Island, South Carolina, Texas, Utah, emergency cardiac care: 911 dispatch centers,Vermont, Washington and Wisconsin) plus 50 emergency medical services (EMS) providers, andcommunity sites in 16 additional states, representing a receiving hospitals. Participating EMS systems cancatchment area of approximately 170 million people or compare their performance to de-identified aggregate51% of the US population. To date, the registry has statistics, allowing for longitudinal benchmarkingcaptured over 800,000 records, with more than 2,200 capability at the local, regional, and national level. EMS agencies and over 2,500 hospitals participating nationwide.Figure 1. Map of 2021 CARES participants.'