Looked back through my sources and dug a little deeper into the primary source material, since you asked; that information was presented at the University of Virginia Sport Psychology Conference in 1988, part of a presentation entitled "Life-Long Benefits of Youth Sports Participation for Girls and Women," by L.K. Bunker. Given the focus of the title, I'll have to assume it was more directed at junior high and high school than at college. Still, interesting that the numbers from UVA and Oppenheimer match so closely.
