Descriptive characteristics of non-traumatic and traumatic cardiac arrest cohorts, with outcomes
| Variable | NTCA | TCA | P value |
| Total, n (%) | 8805 (96.7) | 304 (3.3) | |
| Median age, years (IQR) | 74 (61–83) | 43 (30–61) | <0.001*** |
| Gender, male (%) | 62.5 | 77.0 | <0.001*** |
| Witnessed arrest, n (%) | 4950 (56.4) | 103 (34.0) | <0.001*** |
| Not recorded, n | 24 | 1 | |
| Bystander CPR, n (%) | 4719 (54.6) | 156 (52.2) | 0.40 NS |
| Not recorded, n | 166 | 5 | |
| First monitored rhythm | |||
| Asystole, n (%) | 4689 (56.0) | 204 (70.6) | <0.001*** |
| PEA, n (%) | 1862 (22.3) | 69 (23.9) | 0.52 NS |
| VF, n (%) | 1697 (20.3) | 14 (4.8) | <0.001*** |
| VT, n (%) | 87 (1.0) | 1 (0.3) | 0.25 NS |
| Other, n (%) | 32 (0.4) | 1 (0.3) | 0.92 NS |
| Not recorded, n | 438 | 15 | |
| Survival | |||
| Admission, n (%, 95% CI) | 2423 (27.9, 95% CI 27.0 to 28.9) | 58 (19.3, 95% CI 15.3 to 24.2) | <0.001*** |
| Discharge, n (%, 95% CI) | 623 (8.0, 95% CI 7.4 to 8.7) | 10 (3.8, 95% CI 2.1 to 6.8) | 0.012* |
CPR, cardiopulmonary resuscitation; NS, not significant; NTCA, non-traumatic cardiac arrest; PEA , pulseless electrical activity; TCA, traumatic cardiac arrest; VF, ventricular fibrillation; VT, ventricular tachycardia.
*<0.05
***<0.001