Table 4.
Multivariable Logistic Regression Model Assessing the Effect of Transport Distance on Survival to Hospital Discharge, Adjusting for Potential Confounders
| Odds Ratio | 95% Confidence Interval | |
|---|---|---|
| Distance (per km) | 1.00 | (0.99, 1.01) |
| Male | 0.90 | (0.76, 1.07) |
| Age (per year) | 1.05 | (1.02, 1.08) |
| Non-VF/VT Initial Rhythm | 0.19 | (0.16, 0.22) |
| EMS Witnessed | 2.14 | (1.76, 2.62) |
| Bystander Resuscitation | 2.22 | (1.02, 4.85) |
| Bystander AED | 3.49 | (2.25, 5.42) |
| Response time | 0.67 | (0.56, 0.80) |
| Site 2 | 1.60 | (0.69, 3.70) |
| Site 3 | 5.06 | (2.18, 11.8) |
| Site 4 | 11.9 | (5.30, 26.9) |
| Site 5 | 3.51 | (1.59, 7.78) |
| Site 6 | 4.35 | (1.84, 10.3) |
| Site 7 | 5.84 | (2.62, 13.1) |
| Site 8 | 16.1 | (7.23, 35.7) |
| Site 9 | 5.32 | (2.42, 11.7) |
| Site10 | 8.52 | (3.88, 18.7) |
| ALS first responder | 1.16 | (0.94, 1.42) |
VF/VT: Ventricular Fibrillation /Ventricular Tachycardia
AED: Automated External Defibrillator
ALS: Advanced Life Support was first on scene