Factors at resuscitation
| Period 1 (n=533) | Period 2 (n=777) | p Value | |
|---|---|---|---|
| *Number of patients with missing information during period 1. | |||
| †Number of patients with missing information during period 2. | |||
| CPR, cardiopulmonary resuscitation. | |||
| Initial ventricular fibrillation/tachycardia (%) | 72 | 58 | <0.0001 |
| Bystander CPR (%) (7*, 52†) | 21 | 24 | |
| Witnessed arrest (%) (82*, 54†) | 86 | 82 | |
| Interval between cardiac arrest and arrival of ambulance (minutes) | |||
| Mean (SD) | 4.8 (3.3) | 4.9 (3.7) | |
| Median | 5 | 5 | |
| Range | 0–20 | 1–25 | |
| Interval between cardiac arrest and first defibrillation (minutes) | |||
| Mean (SD) | 7.8 (4.3) | 5.5 (3.3) | <0.0001 |
| Median | 7 | 5 | |
| Range | 0–36 | 0–23 | |