Table 1

Characteristics of study population

Without pre-OHCA diagnosed heart diseaseWith pre-OHCA diagnosed heart diseaseP value
n=1952n=1808
Age in years, mean±SD64.7±14.071.4±12.6<0.001
Male sex1379 (70.6)1289 (71.3)0.66
Cardiovascular risk profile
Obesity311 (15.9)406 (22.5)<0.001
Hypertension824 (42.2)1073 (59.3)<0.001
Hypercholesterolemia498 (25.5)690 (38.2)<0.001
Stroke/transient ischaemic attack168 (8.6)319 (17.6)<0.001
Type 2 diabetes mellitus324 (16.6)520 (28.8)<0.001
Non-cardiac comorbidities
Depression138 (7.1)220 (12.2)<0.001
Chronic obstructive pulmonary disease283 (14.5)384 (21.2)<0.001
Cancer312 (16.0)378 (20.9)<0.001
Rheumatic disease79 (4.0)95 (5.3)0.08
Renal dysfunction136 (7.0)400 (22.1)<0.001
Liver dysfunction73 (3.7)92 (5.1)0.13
Resuscitation parameters
Witnessed arrest0.06
By bystander1250 (64.0)1223 (67.6)
By ambulance154 (7.9)135 (7.5)
Bystander CPR provided1482 (75.9)1339 (74.1)0.19
OHCA at home location1404 (71.9)1351 (74.7)0.053
AED connected1101 (56.4)987 (54.6)0.26
Shockable initial rhythm present849 (43.5)854 (47.2)0.021
Time to defibrillator connection in min*, median (IQR)8.5 (6.5–11.0)8.5 (6.6–10.9)0.67
  • Results are presented as n (%) unless indicated otherwise.

  • *Time between emergency call and connection of AED or manual defibrillator.

  • AED, automated external defibrillator; CPR, cardiopulmonary resuscitation; OHCA, out-of-hospital cardiac arrest.