Fig. 1. Diagram of USDA Food and Nutrient Database for Dietary Studies files and interrelationships File number in parentheses refers to the order of files as listed in Table 1. Food code is the primary link (thick solid lines) between ...
FGP serving constraints (Table 1) were introduced to ensure that the dietary patterns simulated by quadratic programming had intakes for the 5 major food groups that were identical to the FGP recommended intake servings for energy levels of 1600, 2200, and 2800 kcal/d. For example, the dietary...