| ROSC before hospital arrival | Survival at 1 month | Survival at 1 month with minimal neurologic impairment | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | OR | (95% CI) | P | OR | (95% CI) | P | OR | (95% CI) | P | ||||||
Age (1-year increase) | 1.13 | 1.06 | to | 1.21 | 0.009 | 1.05 | 0.98 | to | 1.11 | 0.17 | 1.11 | 1.03 to | Â | 1.20 | 0.01 |
Sex | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   Boys | Ref. |  |  |  |  | Ref. |  |  |  |  | Ref. |  |  |  |  |
   Girls | 1.19 | 0.71 | to | 1.98 | 0.51 | 1.58 | 1.05 | to | 2.36 | 0.03 | 1.50 | 0.89 | to | 2.51 | 0.13 |
Witness status | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   Witness | Ref. |  |  |  |  | Ref. |  |  |  |  | Ref. |  |  |  |  |
   No witness | 0.75 | 0.48 to | to | 1.17 | 0.20 | 0.55 | 0.34 to |  | 0.89 | 0.02 | 0.40 | 0.23 | to | 0.71 | 0.002 |
Type of bystander-initiated CPR | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   No CPR | Ref. |  |  |  |  | Ref. |  |  |  |  | Ref. |  |  |  |  |
   Compression-only CPR | 0.81 | 0.50 | to | 1.31 | 0.40 | 0.85 | 0.50 | to | 1.45 | 0.56 | 1.32 | 0.72 | to | 2.41 | 0.37 |
   Conventional CPR | 1.34 | 0.87 | to | 2.06 | 0.18 | 1.38 | 0.91 | to | 2.08 | 0.13 | 1.54 | 0.87 | to | 2.73 | 0.14 |
Call to CPR by EMS | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   0 to 6 minutes | Ref. |  |  |  |  | Ref. |  |  |  |  | Ref. |  |  |  |  |
   7 to 12 minutes | 0.68 | 0.44 | to | 1.06 | 0.09 | 1.00 | 0.65 | to | 1.53 | 0.99 | 0.67 | 0.36 | to | 1.27 | 0.22 |
   13 to 18 minutes | 0.46 | 0.21 | to | 1.01 | 0.05 | 0.26 | 0.12 | to | 0.58 | 0.001 > | 0.35 | 0.12 | to | 0.97 | 0.04 |
Cause of arrest | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   Cardiac origin | Ref. |  |  |  |  | Ref. |  |  |  |  | Ref. |  |  |  |  |
   Noncardiac origin | 0.48 | 0.28 | to | 0.83 | 0.01 | 0.51 | 0.31 | to | 0.85 | 0.01 | 0.23 | 0.11 | to | 0.49 | 0.001 > |
Type of guideline-based CPR performed | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   2000 Guideline based | Ref. |  |  |  |  | Ref. |  |  |  |  | Ref. |  |  |  |  |
   2005 Guideline based | 0.58 | 0.17 | to | 1.95 | 0.37 | 1.09 | 0.41 | to | 2.89 | 0.86 | 1.24 | 0.34 | to | 4.47 | 0.74 |
Year | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   2005 | Ref. |  |  |  |  | Ref. |  |  |  |  | Ref. |  |  |  |  |
   2006 | 1.24 | 0.71 | to | 2.16 | 0.45 | 1.09 | 0.59 | to | 2.02 | 0.78 | 0.90 | 0.38 | to | 2.12 | 0.81 |
   2007 | 1.65 | 0.36 | to | 7.45 | 0.52 | 0.84 | 0.30 | to | 2.34 | 0.74 | 1.13 | 0.27 | to | 4.75 | 0.86 |
   2008 | 1.63 | 0.42 | to | 6.31 | 0.48 | 1.08 | 0.36 | to | 3.22 | 0.89 | 1.42 | 0.34 | to | 5.85 | 0.63 |
   2009 | 1.98 | 0.55 | to | 7.12 | 0.29 | 0.92 | 0.29 | to | 2.86 | 0.88 | 1.32 | 0.33 | to | 5.22 | 0.70 |
Defibrillator | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   Monophasic | Ref. |  |  |  |  | Ref. |  |  |  |  | Ref. |  |  |  |  |
   Biphasic | 1.46 | 0.81 | to | 2.63 | 0.20 | 1.38 | 0.87 | to | 2.18 | 0.17 | 1.57 | 0.87 | to | 2.83 | 0.14 |