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Independent predictors for survival
| All patients | ||
| OR | 95% CI | |
| Decreasing age (years) | 1.03 | 1.02 to 1.04 |
| Arrest outside home | 2.94 | 2.05 to 4.26 |
| Witnessed arrest | 2.16 | 1.45 to 3.28 |
| Bystander CPR | 1.75 | 1.20 to 2.55 |
| Decreasing interval from call to arrival (units) | 2.65 | 1.96 to 3.60 |
