Fig. 6. Violin plots of recommended maximum on-scene resuscitation times for patients in the test set according to different characteristics.

The recommended maximum on-scene resuscitation time is defined as the recommended duration of on-scene resuscitation in cases where a patient fails to achieve on-scene return of spontaneous circulation. The widths of the violin plots are proportional to the number of patients and are normalized across violins. ECPR extracorporeal cardiopulmonary resuscitation, EMS emergency medical services, CPR cardiopulmonary resuscitation, AED automated external defibrillator.