Participants
OHCA
The lay rescuers were recruited through media as well as word-of-mouth communication. Participation in the study and the collection of anonymous data was based on obtaining written informed consent from all participants. Lay rescuers were informed they would encounter a simulated OHCA and would have to resuscitate for a maximum of 15 min. To avoid bias, no further information was given. Exclusion criteria for participation were physical limitations, resuscitation training within the past five years and no written consent. Each lay rescuer participated only once.