Outcome for all EMS-treated patients per 100 000 inhabitants
| CPR by EMS | GRR N=28 786 | NorCAR N=13 704 | P value |
| Incidence of EMS treated patients | 67.2 | 52.8 | <0.001 |
| Incidence of transport to hospital (%)* | 31.7 (47) | 19.5 (37) | <0.001 |
| Status on arrival to hospital | |||
| Incidence of arrival with ROSC (%) | 24.3 (36) | 15.1 (29) | <0.001 |
| Incidence of arrival with ongoing CPR (%) | 7.4 (11) | 4.1 (8) | <0.001 |
| Incidence of 24-hour survival (%)† | 15.5 (23) | 13.7 (24) | <0.001 |
| Incidence of survival (%)‡ | 8.0 (12) | 7.8 (15) | 0.42 |
*Declared dead/transport to hospital—missing 265 (1%) in GRR and 104 (1%) in NorCAR.
†24-hour survival—missing 2273 (8%) in GRR and 195 (1%) in NorCAR.
‡Survival—missing 1931 (7%) in GRR and 165 (1%) in NorCAR.
CPR, cardiopulmonary resuscitation; EMS, emergency medical service; GRR, German Resuscitation Registry—areas with good data quality; NorCAR, Norwegian Cardiac Arrest Registry; PCI, percutaneous coronary intervention; ROSC, return of spontaneous circulation.