School Nutrition Dietary Assessment Study: overview of the study design

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Abstract
The School Nutrition Dietary Assessment Study collected information from a nationally representative sample of schools and a nationally representative sample of students attending these schools. A total of 545 schools provided information about all meals served during a 1-wk period between February and May 1992, as well as information about school food service operations. Approximately 3350 students in grades 1–12 provided detailed information about the foods and beverages that they consumed during a 24-hr period that included a school day. To assess the content of both the school meals offered to students and the meals consumed by students, the study used dietary standards from three sources: the recommended dietary allowances, the Dietary Guidelines for Americans, and recommendations of the National Research Council.

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