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