Using intake biomarkers to evaluate the extent of dietary misreporting in a large sample of adults: the OPEN study.

@article{Subar2003UsingIB,
  title={Using intake biomarkers to evaluate the extent of dietary misreporting in a large sample of adults: the OPEN study.},
  author={Amy F. Subar and Victor Kipnis and Richard P. Troiano and Douglas N Midthune and Dale A. Schoeller and Sheila Anne Bingham and Carolyn O Sharbaugh and Jillian Trabulsi and Shirley A Runswick and Rachel Ballard-Barbash and Joel C. Sunshine and Arthur S Schatzkin},
  journal={American journal of epidemiology},
  year={2003},
  volume={158 1},
  pages={1-13}
}
This paper describes the Observing Protein and Energy Nutrition (OPEN) Study, conducted from September 1999 to March 2000. The purpose of the study was to assess dietary measurement error using two self-reported dietary instruments-the food frequency questionnaire (FFQ) and the 24-hour dietary recall (24HR)-and unbiased biomarkers of energy and protein intakes: doubly labeled water and urinary nitrogen. Participants were 484 men and women aged 40-69 years from Montgomery County, Maryland. Nine… CONTINUE READING
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