Logistic regression analysis of predictors of the outcome survival to hospital discharge in patients 1–35 years (n=1181)
| Predictors | Univariate analysis OR (95% CI)(P value) | Multivariable analysis AOR (95% CI)(P value) |
| Age (years) | 1.0 (0.99 to 1.05)(0.27) | * |
| Female | 1.03 (0.58 to 1.83)(0.91) | * |
| OHCA outside the home | 1.89 (1.14 to 3.11)(0.01) | 0.90 (0.48 to 1.67)(0.74) |
| Medical aetiology | 2.7 (1.58 to 4.69)(<0.001) | 0.99 (0.52 to 1.92)(0.99) |
| Bystander witnessed OHCA | 5.92 (3.4 to 10.26)(<0.001) | 2.73 (1.42 to 5.23)(0.003) |
| Bystander CPR OHCA | 0.97 (0.53 to 1.70)(0.93) | * |
| Shock delivered before EMS arrival | 13.76 (7.05 to 26.85)*(<0.001) | 2.33 (1.02 to 5.29)(0.044) |
| Shockable initial rhythm | 20.77 (11.93 to 36.16)(<0.001) | 11.08 (5.79 to 21.20)(<0.001) |
| EMS response time (minutes) | 0.97 (0.94 to 1.01)(0.11) |
*Excluded as not reaching significance in univariate analysis.
AOR, adjusted OR; CPR, cardiopulmonary resuscitation; EMS, emergency medical services; OHCA, out-of-hospital cardiac arrest.