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Table 2 Results of univariate and multivariate logistic regression analyses for factors associated with one-month outcomes a

From: Termination-of-resuscitation rule for emergency department physicians treating out-of-hospital cardiac arrest patients: an observational cohort study

Variables Death CPC categories 3 to 5
Crude OR (95% CI) Adjusted OR (95% CI) Crude OR (95% CI) Adjusted OR (95% CI)
Ageb 1.02 (1.02 to 1.02) 1.01 (1.01 to 1.01) 1.03 (1.03 to 1.03) 1.03 (1.02 to 1.03)
Gender (male) 1.40 (1.35 to 1.45) 1.00 (0.96 to 1.05) 0.53 (0.50 to 0.56) 0.90 (0.84 to 0.96)
Unwitnessed by bystanders 4.70 (4.54 to 4.88) 2.18 (2.09 to 2.28) 7.04 (6.61 to 7.50) 2.01 (1.87 to 2.17)
Unwitnessed by EMS personnel 3.51 (3.33 to 3.68) 1.69 (1.59 to 1.81) 5.10 (4.77 to 5.44) 2.68 (2.46 to 2.93)
No bystander CPR 1.13 (1.10 to 1.17) 1.01 (0.97 to 1.06) 1.29 (1.23 to 1.36) 1.11 (1.04 to 1.18)
Noncardiac etiology 1.38 (1.34 to 1.43) 0.93 (0.89 to 0.97) 3.00 (2.83 to 3.19) 1.84 (1.71 to 1.99)
Unshockable initial rhythm 10.4 (10.0 to 10.8) 2.76 (2.54 to 3.01) 21.6 (20.5 to 22.7) 3.38 (2.98 to 3.84)
No prehospital AED administration 7.50 (7.25 to 7.76) 1.54 (1.41 to 1.67) 15.2 (14.4 to 16.0) 1.42 (1.24 to 1.61)
No prehospital ROSC 43.4 (41.8 to 45.0) 25.8 (24.7 to 26.9) 80.2 (75.5 to 85.2) 38.4 (35.9 to 41.0)
Call-to-response timeb 1.10 (1.10 to 1.11) 1.05 (1.04 to 1.06) 1.13 (1.12 to 1.14) 1.05 (1.04 to 1.06)
Call-to-hospital arrival timeb 1.02 (1.01 to 1.02) 1.03 (1.02 to 1.03) 1.02 (1.02 to 1.02) 1.02 (1.02 to 1.03)
  1. aAED, automated external defibrillator; CI, confidence interval; CPC, cerebral performance category; CPR, cardiopulmonary resuscitation; EMS, emergency medical services; OR, odds ratio; ROSC, return of spontaneous circulation. bAdjusted odds ratios are reported for unit odds.