Table 1. Clinical characteristics of the study and control group.
| Clinical characteristics | Study group (n=25) | Control group (n=25) | P |
|---|---|---|---|
| Male subjects | 18 (72.0) | 21 (84.0) | 0.306 |
| Age, years | 65.5±16.4 | 64.1±15.4 | 0.757 |
| Witnessed | 14 (56.0) | 14 (56.0) | 1.000 |
| Bystander CPR | 17 (68.0) | 19 (76.0) | 0.529 |
| Prehospital rhythm | 0.196 | ||
| Shockable | 7 (28.0) | 3 (12.0) | – |
| Unshockable | 18 (72.0) | 21 (84.0) | – |
| Unknown | 0 (4.0) | 1 (4.0) | – |
| Comorbidity | |||
| Any comorbidities | 20 (80.0) | 20 (80.0) | 1.000 |
| Hypertension | 13 (52.0) | 12 (48.0) | 0.777 |
| Diabetes | 8 (32.0) | 7 (28.0) | 0.758 |
| Coronary artery disease | 4 (16.0) | 9 (36.0) | 0.107 |
| Cerebrovascular accident | 1 (1.0) | 4 (16.0) | 0.349 |
| Chronic renal failure | 2 (8.0) | 2 (8.0) | 1.000 |
| Chronic lung disease | 3 (12.0) | 1 (4.0) | 0.609 |
| Chronic liver disease | 0 (0.0) | 1 (4.0) | 1.000 |
| Active cancer | 1 (4. 0) | 5 (20.0) | 0.189 |
| Initial rhythm | 0.147 | ||
| VF/pulseless VT | 0 (0.0) | 2 (8.0) | – |
| PEA | 2 (8.0) | 4 (16.0) | – |
| Asystole | 23 (92.0) | 19 (76.0) | – |
| Time factors | |||
| Prehospital CPR time | 22.7±7.1 | 21.8±9.2 | 0.720 |
Data are presented as n (%) or mean with standard deviation. CPR, cardiopulmonary resuscitation; VF, ventricular fibrillation; VT, ventricular tachycardia; PEA, pulseless electrical activity.