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Table 1 Clinical and demographic characteristics for 737 of cardiac arrest patients, according to immediate outcome (ROSC with hospital admission)

From: Partial pressure of end-tidal carbon dioxide successful predicts cardiopulmonary resuscitation in the field: a prospective observational study

  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
  1. 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.