Relative validity of fruit and vegetable intake estimated from an FFQ, using carotenoid and flavonoid biomarkers and the method of triads
Relative validity of fruit and vegetable intake estimated from an FFQ, using carotenoid and flavonoid biomarkers and the method of triads
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DOI：
10.1017/s0007114510005246
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发表时间：
2011-05-01
影响因子：
3.6
通讯作者：
Andersen, Lene F.
中科院分区：
文献类型：
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作者：
Carlsen, Monica H.;Karlsen, Anette;Andersen, Lene F.
本研究的目的是验证水果，果汁和蔬菜的摄入量从FFQ。在子研究I（n 147）中，根据7 d称重食物记录（WR）和血浆类胡萝卜素浓度评价FFQ摄入量，而在子研究II（n 85）中，根据血浆类胡萝卜素浓度和24 h尿样中类黄酮含量评价摄入量。通过比较中位摄入量、估计相关系数和效度系数，采用三元组方法评价相对效度。在子研究I中，我们观察到FFQ和WR之间的每日中位水果摄入量无显著差异，而FFQ的蔬菜摄入量高于WR。FFQ和WR的摄入量之间的相关性范围为0.31至0.58。在子研究II中，水果和蔬菜的摄入量与血浆类胡萝卜素浓度和尿类黄酮显著相关。在子研究I和子研究II中，FFQ中水果和蔬菜摄入量的有效性系数范围为0.61 - 0.88和0.60 - 0.94。总之，根据观察到的FFQ摄入量与生物标志物和FFQ有效性系数之间的关联，发现FFQ有效且适合根据水果、果汁和蔬菜的通常摄入量对个体进行排名。
The aim of the present study was to validate the intakes of fruit, juice and vegetables from an FFQ. In sub-study I (n 147), intakes from the FFQ were evaluated against 7 d weighed food records (WR) and plasma carotenoid concentrations, whereas in sub-study II (n 85), the intakes were evaluated against plasma carotenoid concentrations and amounts of flavonoids in 24 h urine samples. Relative validity was evaluated by comparing median intakes, estimating correlation coefficients and validity coefficients using the method of triads. In sub-study I, we observed no significant difference in daily median fruit intake between the FFQ and the WR, whereas the intake of vegetables was higher from the FFQ than from the WR. The correlations between intakes from the FFQ and the WR ranged from 0.31 to 0.58. In sub-study II, the intakes of fruit and vegetables correlated significantly with plasma carotenoid concentrations and urinary flavonoids. The validity coefficients for the intakes of fruit and vegetables from the FFQ ranged from 0.61 to 0.88 in sub-study I and from 0.60 to 0.94 in sub-study II. In summary, based on the associations observed between intakes from the FFQ and the biomarkers and the FFQ validity coefficients, the FFQ was found valid and suitable for ranking individuals according to their usual intake of fruit, juice and vegetables.