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Sibylle Kranz, PhD, RD, Anna Maria Siega-Riz, PhD, RD and Amy H. Herring, ScD

Sibylle Kranz is with the Department of Nutritional Sciences and the Population Research Institute, Pennsylvania State University, State College, Pa. Anna Maria Siega-Riz is with the Department of Nutrition, School of Public Health, and the Department of Maternal and Child Health, and Amy H. Herring is with the Department of Biostatistics, University of North Carolina at Chapel Hill.

Correspondence: Requests for reprints should be sent to Sibylle Kranz, PhD, RD, Population Research Institute, 5-G Henderson Bldg, Pennsylvania State University, University Park, PA 16802 (e-mail: sxk72{at}psu.edu).

Objectives. We determined diet quality trends among nationally representative samples of preschoolers between 1977 and 1998.

Methods. Adjusted diet quality index scores, overall intake, and tertiles of total score were compared for combined samples and 2 age groups using t tests with Bonferroni correction; surveys used were the US Department of Agriculture’s National Food Consumption Survey 1977–1979 (n = 2342), Continuing Survey of Food Intake by Individuals (CSFII) 1989–1991 (n = 858), and CSFII 1994–1996 and 1998 (n = 5355).

Results. Total scores increased slightly. Consumption of grains, fruits, and vegetables improved while added sugar and juice intake worsened.

Conclusions. Diet quality improved marginally since 1977. Consumption of fruits and vegetables needs to be increased and that of total and saturated fat, juice, and added sugar decreased.

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