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Table 1 Baseline characteristics, n = 155

From: Quality of cardiopulmonary resuscitation in out-of-hospital cardiac arrest before and after introduction of a mechanical chest compression device, LUCAS-2; a prospective, observational study

Cardiac arrest background variables

Age in years, mean (SD)

66 (±15), n = 146

Male gender 67%

(92/138)

Place of cardiac arrest

81% (99/123)

Home

19% (23/123)

Public

1% (1/123)

EMS vehicle

81% (99/123)

Cardiac arrest witnessed

67% (83/124)

Layperson

53% (66/124)

Health care professional

5% (6/124)

EMS

9% (11/124)

Bystander CPR

74% (93/125)

Rhythm on arrival of EMS

 

Asystole

40% (50/126)

PEA

24% (31/126)

VF/VT

33% (41/126)

Other

3% (4/126)

Proportion of AED analysis

98% (152/155)

+ defibrillation

47% (73/155)

- defibrillation

87% (135/155)

Defibrillation with AED before arrival of the EMS

0% (0/155)

  1. Continuous data presented as mean +/− SD, valid cases.
  2. Categorical variables presented as percentage (n/valid cases).
  3. EMS = Emergency medical service. Health care professional = EMS personnel, nurse, physician. CPR = cardiopulmonary resuscitation. PEA = Pulseless electrical activity. VF = Ventricular fibrillation. VT = Ventricular tachycardia. AED = Automated external defibrillator.