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Title
Energy density, portion size, and eating occasions: contributions to increased energy intake in the United States, 1977-2006.
Authors
Duffey, Kiyah J; Popkin, Barry M
Abstract
Competing theories attempt to explain changes in total energy (TE) intake; however, a rigorous, comprehensive examination of these explanations has not been undertaken. Our objective was to examine the relative contribution of energy density (ED), portion size (PS), and the number of eating/drinking occasions (EOs) to changes in daily TE.