“…Our study showed that bystander CPR rates have increased over time, but survival remained unchanged, which was consistent with Fonte et al This result may be related to the types of bystander CPR provided, that is, whether bystander perform chest compression‐only CPR or conventional CPR (chest compressions and rescue breaths). Bystander CPR prompted by ambulance call‐takers is usually chest‐compressions only in WA, although we were not able to determine from our database the type or quality of bystander CPR performed.…”