Feb 26, 2013 1:49 PM by NBC News
Targeting CPR education in high risk neighborhoods could save more lives.
Data show survival rates for heart attacks that occur outside of a hospital vary widely across the country and that's mostly due to whether or not bystanders perform CPR.
Experts say that's why education efforts should be concentrated in areas with lower rates of CPR-trained residents, which tend to be in poorer neighborhoods.
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