Development of a Self-Assessment Instrument to Determine Daily Intake and Variability of Dietary Vitamin K
R. Rebecca Couris, PhD, RPh,,
Gary R. Tataronis, MS,
Sarah L. Booth, PhD,
Gerard E. Dallal, PhD,
Jeffrey B. Blumberg, PhD, FACN and
Johanna T. Dwyer, DSc
Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University (R.R.C., S.L.B., G.E.D., J.B.B., J.T.D.), Boston, Massachusetts
Massachusetts College of Pharmacy and Health Sciences (R.R.C., G.R.T.), Boston, Massachusetts

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Fig. 1. Differences between dietary phylloquinone intake by patients as assessed using weighed diet records and the K-Card.
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Fig. 2. Differences against means for dietary phylloquinone intake assessed from the K-Card and diet records.
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Copyright © 2000 by the American College of Nutrition.