Table 2.
Results of analysis of study outcomes using propensity score matching
| 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 |
Abbreviations: OCCPR open-chest cardiopulmonary resuscitation, CCCPR closed-chest cardiopulmonary resuscitation, ED emergency department