Introduction
In Norway, there is a lack of reliable epidemiological data on emergency situations. Approximately 5 000 unexpected out-of-hospital cardiac arrests has been the figure used by The Norwegian Resuscitation Council and other organisations when promoting the importance of knowledge in cardiopulmonary resuscitation (CPR). As part of a multicenter study on how out-of-hospital emergency patients are administrated, we also collected epidemiological data. The aim of this substudy was to describe the incidence of unexpected death/resuscitated patients outside hospitals in Norway, per year.