I was curious so I looked up the numbers on wikipedia: http://en.wikipedia.org/wiki/Cardiopulmonary_resuscitation#Effectiveness http://en.wikipedia.org/wiki/Ca

I was curious so I looked up the numbers on wikipedia: http://en.wikipedia.org/wiki/Cardiopulmonary_resuscitation#Effectiveness http://en.wikipedia.org/wiki/Cardiopulmonary_resuscitation#E... The survival rates are: CPR by a bystander: 4% Cardiocerebral Resuscitation (i.e., chest compressions only without artificial respiration): 6% No bystander CPR: 2% So attempting CPR results on average in doubling the survival rate as opposed to just waiting for an ambulance, and chest compressions only are 50% better than chest compressions plus mouth-to-mouth.