b'22Incidence & Demographics2019 Dataset and Incidence of OHCA Events This report describes CARES data from the most recent calendar year, January 1 to December 31, 2019. CARES requires that an EMS Agency enter at least one complete calendar year of data and meet a patient lost to follow-up threshold of less than 1% to be included in the Annual National Report. The CARES 2019 National Reports can be viewed at: https://mycares.net/sitepages/reports2019.jsp. Descriptive statistics in this report are presented as frequencies or proportions for categorical variables, and median and interquartile ranges for continuous variables. Comparison of proportions were conducted using the chi-square test. The 2019 dataset includes 1,604 EMS Agencies and 1,765 Hospitals, and represents a population of 131.9 million, approximately 40% of the U.S. population. In 2019, 100,956 OHCA events were reported to CARES. The crude incidence of non-traumatic, worked arrests was 76.5 per 100,000, slightly above the incidence rate observed in 2018 of 74.3. Using 2019 census data to extrapolate to the U.S. population 4 , CARES estimates that there were approximately 251,000 EMS-treated, non-traumatic OHCAs in the United States last year.Demographics In 2019, CARES patients were predominately male (62.2%). Of the reported OHCA events, 97.3% (n=98,159) were adults and 2.7% (n=2,761) were children, 18 years and younger. The median age of OHCA patients was 65.0 years (mean: 62.4; SD: 19.1). The age distribution varied significantly across the sexes (Figure 2), with females having a higher median age of arrest (66.0 vs. 64.0 years, p.0001).Figure 2. Age distribution of OHCA events.'