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Table 3 Logistic regressions of factors associated with unfavorable survival outcomes

From: External validation of multimodal termination of resuscitation rules for out-of-hospital cardiac arrest patients in the COVID-19 era

  Dead Survival Univariate Multivariablea
Crude Odds
(95% CI)
P value Adjusted Odds
(95% CI)
P value
Age (years) 75 [63–80] 62 [57–69] 1.05 (1.00–1.10) 0.070   
Age > 70 years 100 (61.3) 1 (14.3) 9.52 (1.12–80.97) 0.039 6.43 (0.28–148.0) 0.244
Age > 60 years 127 (77.9) 4 (57.1) 2.64 (0.56–12.36) 0.216 0.44 (0.02–8.83) 0.591
Location, non-public places 118 (72.4) 3 (42.9) 3.49 (0.75–16.24) 0.107   
Not witnessed by bystander 64 (39.3) 3 (42.9) 0.86 (0.18–3.97) 0.999   
Not witnessed by EMT 139 (85.3) 4 (57.1) 4.34 (0.91–20.63) 0.081 1.56 (0.06–39.89) 0.782
No bystander CPR 108 (66.3) 4 (57.1) 1.47 (0.32–6.81) 0.691   
Initial acquired rhythm
 Non-shockable rhythm in the field 152 (93.3) 3 (42.9) 18.42 (3.65–92.8) 0.001 15.32 (0.04–663.7) 0.378
 Asystole in the field 107 (65.6) 0 (0) 0.001  
 Asystole in the ED 127 (77.9) 0 (0) < 0.001  
No prehospital shock delivery 144 (88.3) 4 (57.1) 5.68 (1.18–27.4) 0.047 6.06 (0.26–101.1) 0.262
No prehospital ROSC 161 (98.8) 1 (14.3) 48.30 (3.83–109.3) < 0.001 26.24 (1.48–463.3) < 0.001
  1. CI confidence interval, CPR cardiopulmonary resuscitation, ED emergency department, EMT emergency medical technician, OR odds ratio, ROSC return of spontaneous circulation
  2. aAdjusted for age, gender, location of arrest, primary electrocardiogram (ECG), witness status, and whether prehospital ROSC was achieved before arriving at the ED