Managing sales of beverages in schools to preserve profits and improve children's nutrition intake in 15 Mississippi schools.

School environments that provide consistent and reliable nutrition information promote the development of healthful eating in children. High-energy, nutrient-poor beverages offered for sale to children during the school day compete with healthful choices. The primary objective of this prospective, quasiexperimental study was to encourage children to choose more healthful beverages during the school day without adversely affecting the profits realized from vending sales.