Table 4 Unadjusted and adjusted odds ratio for 28-day mortality
Variables | Unadjusted ORs (95% CI) | P Value | Adjusted ORs (95% CI) | P Value |
|---|---|---|---|---|
Age, years | 0.97 [0.93, 1.03] | 0.322 | NA | |
Primary etiology of cardiac arrest | ||||
Cardiac | 1 [Reference] | NA | ||
Respiratory | 2.98 [1.19, 7.91] | 0.022 | NA | |
Other | 1.95 [0.45, 8.96] | 0.376 | NA | |
Unknown | 4.18 [1.25, 15.25] | 0.024 | NA | |
Cardiac arrest witnessed | 0.57 [0.32, 1.00] | 0.049 | NA | |
Duration of chest compression | ||||
≤ 15 min | 1 [Reference] | NA | ||
> 15 to ≤ 30 min | 1.78 [0.87, 3.70] | 0.119 | NA | |
> 30 min | 4.73 [2.26, 10.22] | < 0.001 | NA | |
Unable to determine | 2.00 [0.51, 8.68] | 0.327 | NA | |
Initial cardiac arrest rhythm | ||||
Asystole | 1 [Reference] | 1 [Reference] | ||
Bradycardia | 0.59 [0.17, 2.16] | 0.409 | 1.15 [0.29, 4.71] | 0.841 |
Pulseless electrical activity | 1.36 [0.58, 3.47] | 0.495 | 1.17 [0.44, 3.30] | 0.763 |
Ventricular fibrillation or tachycardia | 0.18 [0.05, 0.56] | 0.005 | 0.24 [0.05, 0.92] | 0.046 |
Unknown | 0.56 [0.26, 1.23] | 0.145 | 0.55 [0.20, 1.43] | 0.222 |
Doses of epinephrine | ||||
≤ 2 | 1 [Reference] | 1 [Reference] | ||
> 2 to ≤ 4 | 2.09 [1.08, 4.11] | 0.03 | 1.52 [0.71, 3.24] | 0.279 |
> 4 | 7.39 [3.39, 17.36] | < 0.001 | 4.04 [1.69, 10.25] | 0.002 |
Missing | 7.90 [2.41, 35.83] | 0.002 | 6.59 [1.79, 32.36] | 0.009 |
Temperature upon admission, ℃ | 0.67 [0.57, 0.78] | < 0.001 | 0.79 [0.66, 0.93] | 0.007 |
Hypotension upon admission | 3.09 [1.46, 7.15] | 0.005 | 3.20 [1.34, 8.44] | 0.012 |
WBC upon admission, 10^9/L | 1.04 [1.00, 1.07] | 0.028 | NA | |
Coagulopathy upon admission | 4.03 [2.26, 7.38] | < 0.001 | 2.20 [1.12, 4.39] | 0.023 |