Table 3.

New Indicators and Variables Suggested for the Danish Cardiac Arrest Registry

Indicator Text	Measurement	New Variable
The proportion of survivors after Our-of-Hospital cardiac arrest with initial non-shockable rhythm	All patients who are treated for OHCA and has an initial non-shockable rhythm and have survived at least 30 days after the date of OHCA/All OHCAa	Initial rhythm described as Sinus rhythm, Bradycardia, tachycardia, Atrial defibrillation, 3. Degree AV blockage, Pulseless electrical activity (PEA), Asystole
Time from the telephone call to the emergency medical dispatch center till the arrival of the ambulance with the patient (response-time) at the hospital	Time from registered telephone call at the EMS dispatch to arrival with the patient at the hospital	Time and date for incident record creation, Time and date for arrival to the hospital
The proportion of AED brought to the patient but did not administer a shock	Number of AED brought to the scene of the OHCA, placed on the patient, but no shock delivered/All OHCAa	AED forwarded to the scene, but no shock was delivered
The proportion of Out-of-Hospital cardiac arrests with non-medical cause	Number of OHCA with no medical cause/All OHCAa	Description of etiology of cardiac arrest: Trauma, Drug, overdose, Drowning, Electrocution, or Asphyxia

Note: ^aAll patients who are registered with a OHCA and a valid CPR.