b'CARES Annual Report 2020 | 11The 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 27 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, Maryland, Michigan, determine standard outcome measures for out-of- Minnesota, Mississippi, Missouri, Montana, Nebraska, hospital cardiac arrest (OHCA), by linking the threeNorth Carolina, Ohio, Oregon, Pennsylvania, South sources of information that define the continuum ofCarolina, Texas, Utah, Vermont, Washington and emergency cardiac care: 911 dispatch centers,Wisconsin) with more than 56 community sites in 15 emergency medical services (EMS) providers, andadditional states, representing a catchment area of receiving hospitals. Participating EMS systems canapproximately 162 million people or 49% of the US compare their performance to de-identified aggregatepopulation. To date, the registry has captured over statistics, allowing for longitudinal benchmarking600,000 records, with more than 2,000 EMS agencies capability at the local, regional, and national level.and over 2,500 hospitals participating nationwide.Figure 1. Map of 2021 CARES participants.'