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This document presents a new application of the method of triads to estimate the correlation between dietary questionnaire measures and true dietary intake using two instrumental variables. A validation study involving Seventh-day Adventists showed that the estimated correlations between the dietary questionnaire and true intake ranged from 0.40 to 0.66, while those for reference methods were higher. The findings suggest that carefully chosen biomarkers can improve the estimation of dietary intake validity,

Author

David

Language

EN