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Table 3 Results of instrumental variable analysis of study outcomes

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

Outcomes Number of patients (%) OCCPR/CCCPR Adjusted difference (%) (95% confidence interval) P value
Survival to hospital discharge 40 (1.8)/156 (3.6) –5.0 (–9.2, –0.8) 0.019
Survival over 24 hours after ED arrival 123 (5.6)/416 (9.6) –5.6 (−12.3, 1.1) 0.100
  1. Abbreviations: OCCPR open-chest cardiopulmonary resuscitation, CCCPR closed-chest cardiopulmonary resuscitation, ED emergency department