b'2024 DATASETREGIONAL VARIATION IN OHCA OUTCOMESThe marked regional variation in OHCA patient outcomes and bystander intervention rates among CARES communities allows for comparisons of system performance and outcome metrics. The figures below compare overall survival rates (Figure 22), Utstein survival rates (Figure 23), and bystander CPR rates (Figure 24) among the 165 EMS agencies with 200 CARES cases in 2024. These figures highlight substantial variability among participating agencies, with ranges as follows: overall survival 3.621.7% (more than 6-fold difference); Utstein survival 0.070.6% (70-fold difference); bystander CPR 11.584.6% (more than 7-fold difference).2024 Overall Survival Rates24%22%2024 Overall Survival (%) 2024 Utstein Survival (%) 2024 Bystander CPR (%)20%18%16%14%12%10%08%06%04%02%00%EMS AgencyFigure 22. Variability in overall survival rates, among EMS agencies with 200 CARES cases in 2024.2024 Utstein Survival Rates75%70%65%60%55%50%45%40%35%30%25%20%15%10%05%00%EMS AgencyFigure 23. Variability in Utstein survival rates, among EMS agencies with 200 CARES cases in 20242024 Bystander CPR Rates60%50%40%60%50%40%30%20%10%48 00%EMS AgencyFigure 24. Variability in bystander CPR rates, among EMS agencies with 200 CARES cases in 2024.'