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Blood donors tend to have more education and higher incomes than the general population, with incomes as much as 30% higher than those of nondonors. Donors with some college education are the most overrepresented group compared with nondonors. Lightman [18] found that 60% of blood donors in Toronto, Canada, had some post–high school education, compared with 20% for the entire city. Bowman et al. [11] found that 77% of their donors had some post–high school education, with a range of 60–80% in the different blood centers participating in the study. In a separate study, 69% of all donors and 79% of multigallon donors had more than a high school education.