Table 1.
Clinical and demographic characteristics for 737 of cardiac arrest patients, according to immediate outcome (ROSC with hospital admission)
| Death in the field (n = 335) | ROSC with hospitalization (n = 402) | P value | |
| Male sex (n [%])a | 242 (72.2%) | 253 (62.9%) | 0.007 |
| Age (years; mean ± SD)b | 62.7 ± 15.8 | 58.8 ± 12.8 | 0.049 |
| Initial shockable (VF/VT) rhythm (n [%])a | 92 (27.5%) | 212(52.7%) | <0.001 |
| Witnessed arrests (n [%])a | 176 (52.5%) | 294 (73.1%) | 0.001 |
| Bystander CPR (n [%])a | 41 (12.2%) | 132 (32.8%) | <0.001 |
| Initial PetCO2 (kPa [mmHg]; mean ± SD)b | 2.6 ± 2.4 (19.6 ± 18.1) | 3.1 ± 1.6 (23.5 ± 12.4) | <0.001 |
| Final PetCO2 (kPa [mmHg]; mean ± SD)b | 0.9 ± 0.3 (7.3 ± 2.5) | 3.5 ± 0.9 (27.4 ± 7.1) | <0.001 |
| Response time (minutes; mean ± SD)b | 11.2 ± 4.3 | 7.8 ± 3.9 | <0.001 |
aFisher test. bWilcoxon rank sum test. CPR, cardiopulmonary resuscitation; PetCO2, partial end-tidal pressure of carbon dioxide; SD, standard deviation; VF, ventricular fibrillation; VT, ventricular tachycardia.