In addition, reviews of the available school-based programs suggest that very few of them produce well-documented improvements in children’s food consumption, exercise, or BMI%. For example, many of these programs rely on self-report by children, parents, or teachers, rather than direct measurement of the outcome variables. Also, most improvements produced by school programs tend to last only as long as the program is in place, and the programs often include many complex components that reduce their acceptability for long-term application by busy parents and school
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