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. Author manuscript; available in PMC: 2011 Jul 1.
Published in final edited form as: Resuscitation. 2010 Apr 18;81(7):826–830. doi: 10.1016/j.resuscitation.2010.02.005

Table 4.

Adjusted Odds ratio of Survival relative to EMS witnessed group

Bystander witnessed Unwitnessed
All Treated Cardiac Arrest EMS Witnessed Bystander CPR No bystander CPR Bystander CPR
Adjusted for:
Site only 1.00 0.75 (0.68,0.84) 0.48 (0.43,0.53) 0.14 (0.12,0.16) 0.16 (0.14,0.18)
Site, Age, Sex and Private/Public Location 1.00 0.61 (0.54,0.68) 0.45 (0.40,0.50) 0.12 (0.10,0.14) 0.15 (0.13,0.17)
Site, Age, Sex, Private/Public Location and first EMS rhythm 1.00 0.41 (0.36,0.46) 0.37 (0.33,0.43) 0.17 (0.14,0.20) 0.21 (0.18,0.24)

Data presented as OR (95% CI).