Data from Campbell Rinker studies of 17,900 U.S. donors in 2015, 2016 and 2017. Total margin of error +/-0.25% at the 95% confidence level.
Donor Age Varies by State
Data from Campbell Rinker studies of 17,900 U.S. donors in 2015, 2016 and 2017. Total margin of error +/-0.25% at the 95% confidence level.