Reproducibility and relative validity of a food-frequency questionnaire among French adults and adolescents
Reproducibility and relative validity of a food-frequency questionnaire among French adults and adolescents
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DOI：
10.1038/sj.ejcn.1602914
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发表时间：
2009-02-01
影响因子：
4.7
通讯作者：
Romon, M.
中科院分区：
文献类型：
--
作者：
Deschamps, V.;de Lauzon-Guillain, B.;Romon, M.
目的：我们的目的是评估在法国人群中开发的食物频率问卷 (FFQ) 的可重复性，及其对四次 24 小时饮食回忆 (24-HR) 的有效性。方法：共有 57 名成人（18-63 岁）、17 名青少年（14-18 岁）和 20 名儿童（10-14 岁）完成了四次 24-HR（每个季节一次）和两次 FFQ。间隔 1 年。 FFQ 的再现性通过组内相关系数 (ICC) 进行评估。通过与四个 24-HR 进行比较来评估 FFQ 的有效性。结果：对于大多数营养素，第一次 FFQ 测量的平均值高于第二次 FFQ 的平均值。营养素的 ICC 范围为总蛋白质的 0.39 到酒精的 0.83。每天食用的食品（例如牛奶（0.80）或糖和糖果（0.65））的 ICC 较高，而很少食用的食品（例如内脏（0.11））则较低。除酒精外，FFQ 评估的营养摄入量高于 24 小时评估的营养摄入量。营养物质的去衰减皮尔逊相关系数从 0.25（膳食纤维）到 0.90（酒精）不等，但能量调整并没有改善这些系数。当营养摄入量被分类为五分位数时，FFQ 和 24-HR 产生的一致率（相同或相邻五分位数）在 55%（对于 PUFA）和 95%（对于酒精）之间，而错误分类到极端五分位数的情况很少见 (< 5%)。结论：为 FLVS II 研究开发的 FFQ 可用于根据成人或青少年在 1 年期间的营养和食物摄入量对成人或青少年进行分类。
Objective: Our aim was to evaluate the reproducibility of a food-frequency questionnaire (FFQ) developed in a French population, and its validity against four 24-h dietary recalls (24-HRs).Methods: A total of 57 adults (aged 18-63), 17 adolescents (aged 14-18) and 20 children (aged 10-14) completed four 24-HRs (one per season) and two FFQs over a 1-year interval. Reproducibility of the FFQ was estimated by intraclass correlation coefficients (ICCs). The validity of FFQ was assessed by comparison with the four 24-HRs.Results: For most nutrients, the first FFQ measurements gave higher mean values than the second FFQ. The ICCs for nutrients ranged from 0.39 for total protein to 0.83 for alcohol. The ICCs were higher for food items consumed daily such as milk (0.80) or sugars and confectionery (0.65), and lower for rarely eaten food such as inner organs (0.11). Nutrient intakes as assessed by FFQs were higher than those from the 24-HRs, except for alcohol. The de-attenuated Pearson's correlation coefficient for nutrients varied from 0.25 (dietary fiber) to 0.90 (alcohol), but the adjustment for energy did not improve these coefficients. When nutrient intakes were categorized into quintiles, FFQ and 24-HRs produced agreement rates (same or adjacent quintile) between 55% (for PUFA) and 95% (for alcohol), while misclassification to an extreme quintile was rare (< 5%).Conclusion: The FFQ developed for the FLVS II Study can be used to classify adults or adolescents according to their nutrients and food intakes over a 1-year period.