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Table 2 Results of analysis of study outcomes using propensity score matching

From: Open-chest versus closed-chest cardiopulmonary resuscitation in blunt trauma: analysis of a nationwide trauma registry

Outcomes Number of patients (%) OCCPR/CCCPR Odds ratio (95% confidence interval) P value
Unmatched cohort (OCCPR, 2192 patients; CCCPR, 4318 patients)
 Survival to hospital discharge 40 (1.8)/156 (3.6) 0.49 (0.34–0.71) <0.001
 Survival over 24 hours after ED arrival 123 (5.6)/416 (9.6) 0.56 (0.45–0.70) <0.001
Matched cohort (OCCPR, 1804 patients; CCCPR, 1804 patients)
 Survival to hospital discharge 22 (1.2)/60 (3.3) 0.41 (0.25–0.68) <0.001
 Survival over 24 hours after ED arrival 89 (4.9)/147 (8.1) 0.59 (0.45–0.79) <0.001
  1. Abbreviations: OCCPR open-chest cardiopulmonary resuscitation, CCCPR closed-chest cardiopulmonary resuscitation, ED emergency department