Use of Duplicate Plate Method to Evaluate Dietary Assessment Methods

The increased awareness of calcium and health outcomes, along with the acknowledgement of nationwide inadequate calcium intake, has led to a growing market of calcium-fortified foods in the US. Interviews done in 12 states with 203 primary food providers for early adolescents (10-13 year old) suggested that a noticeable proportion of the intentional purchasers of fortified foods failed to correctly identify such products while some individuals purchased fortified foods without awareness. This brings the challenge in assessing dietary calcium intake from all food sources. The primary objective of this study was to compare self-reported and objective measure of calcium intakes in order to identify specific dietary assessment tool(s) that could comprehensively capture all dietary calcium sources among Asian, Hispanic, and non-Hispanic White women.