(Left panel) Incidence of non-traumatic cardiac arrest (NTCA) per 100 000 population by age group and sex (n=8557): age or sex data were not recorded in n=248 cases. (Left panel) Incidence of non-traumatic cardiac arrest (NTCA) per 100 000 population by age group and sex (n=8557): age or sex data were not recorded in n=248 cases. (Right panel) Traumatic cardiac arrest (TCA) per 100 000 population by age group and sex (n=245): age or sex data were not recorded in n=59 cases. Ed B G Barnard et al. Emerg Med J 2019;36:333-339 Copyright © BMJ Publishing Group Ltd and the College of Emergency Medicine. All rights reserved.