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Table 3 Univariate and multivariate factors associated with 30-day mortality in out-of-hospital cardiac arrest patients with prehospital return of spontaneous circulation or refractory out-of-hospital cardiac arrest transported to hospital

From: Refractory out-of-hospital cardiac arrest with ongoing cardiopulmonary resuscitation at hospital arrival – survival and neurological outcome without extracorporeal cardiopulmonary resuscitation

  Univariable Multivariable
HR (95% CI) p Value HR (95% CI) p Value
Refractory OHCA 2.2 (1.7–2.7) < 0.0001 2.4 (1.8–3.1) < 0.0001
Age at OHCA (per 5 years older) 1.1 (1.1–1.2) < 0.0001 1.1 (1.1–1.2) < 0.0001
Public OHCA 0.5 (0.5–0.6) < 0.0001 0.7 (0.5–0.8) < 0.0001
Witnessed OHCA 0.7 (0.6–0.9) 0.0003 0.6 (0.5–0.8) 0.0001
Bystander CPR performed 0.6 (0.5–0.6) < 0.0001 0.6 (0.5–0.8) < 0.0001
Duration of resuscitation attempt > 30 min 1.5 (1.3–1.8) < 0.0001 1.4 (1.2–1.7) < 0.0001
High comorbidity burden (CCI ≥ 3) 1.6 (1.4–1.9) < 0.0001 1.3 (1.1–1.6) 0.007
Calendar year 1.0 (1.0–1.0) 0.3 1.0 (1.0–1.0) 0.7
  1. p-values in bold indicate statistical significance. OHCA Out-of-hospital cardiac arrest, CPR Cardiopulmonary resuscitation, CCI Charlson comobidity index