Table 3.
Multivariable logistic regression of OHCA event characteristics and outcomes between pandemic and pre-pandemic periods.
| Variable | Event vs. Reference Level | Pandemic vs. Pre-Pandemic | |
|---|---|---|---|
| Adjusted Odds Ratio (95% CI) | p-Value | ||
| OHCA characteristics 1 | |||
| Location Type | Home residence vs. Public areas | 1.48 (1.24, 1.75) | <0.001 |
| Witnessed arrest | Yes vs. No | 1.71 (1.49, 1.97) | <0.001 |
| Bystander CPR performed | Yes vs. No | 0.70 (0.61, 0.81) | <0.001 |
| Bystander AED applied | Yes vs. No | 1.63 (1.26, 2.10) | <0.001 |
| Clinical Outcomes 2 | |||
| Pre-hospital ROSC | Yes vs. No | 0.67 (0.53, 0.84) | <0.001 |
Pandemic period: Jan to May 2020; Pre-pandemic period: Jan to May 2018, Jan to May 2019. 1 Multivariable logistic regression of OHCA characteristics, accounting for age (continuous), gender, first rhythm of arrest, location type, witnessed arrest and bystander interventions. Outcome is taken as the year, with reference year being the combined of 2018+2019. 2 Multivariable logistic regression of outcome, accounting for age (continuous), gender, location type, witnessed arrest, bystander interventions, first rhythm of arrest, pre-hospital defibrillation and total response time (continuous). Abbreviations: OHCA, out-of-hospital cardiac arrest; CPR, cardiopulmonary resuscitation; AED, automated external defibrillation; ROSC, return of spontaneous circulation.