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Association between food frequency questionnaire (FFQ)-estimated phylloquinone intake and circulating biomarkers of vitamin K status (at baseline) in community-dwelling older men and women participating in a phylloquinone supplementation trial [39,40]. The geometric mean of each biomarker is plotted at the median intake within each decile category. Adjustment was made for age, sex, BMI, energy intake (kcals/day), season, and triglycerides (for plasma phylloquinone).
