Online Dietary Intake Estimation: Reproducibility and Validity of the Food4Me Food Frequency Questionnaire Against a 4-Day Weighed Food Record
Online Dietary Intake Estimation: Reproducibility and Validity of the Food4Me Food Frequency Questionnaire Against a 4-Day Weighed Food Record
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DOI：
10.2196/jmir.3105
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发表时间：
2014-08-01
影响因子：
7.4
通讯作者：
Lovegrove, Julie A.
中科院分区：
文献类型：
--
作者：
Fallaize, Rosalind;Forster, Hannah;Lovegrove, Julie A.
背景：营养评估的进展继续拥抱计算机技术的发展。在线Food 4 Me食物频率问卷（FFQ）是作为收集营养摄入数据的电子系统创建的。为了确保其在评估营养素和食物组摄入量方面的准确性，需要进一步验证使用可靠但独立的仪器获得的数据，并评估其重现性。目的：目的是评估Food 4 Me FFQ对4天称重食物记录（WFR）的重现性和有效性。Food 4 Me FFQ的重现性使用重测方法进行评估，要求参与者在4周内完成2次FFQ。为了评估Food 4 Me FFQ对4天WFR的有效性，还要求一半的参与者在Food 4 Me FFQ首次给药后1周完成4天WFR。使用Bland-Altman方法和每日摄入量的四分位数分类，评价了通过重复Food 4 Me FFQ和Food 4 Me FFQ和4天WFR估计的营养素和食物组摄入量之间的一致性水平。粗未调整的相关系数也计算营养素和食物组intakes.Results：总共有100人参加了再现性的评估（平均年龄32，SD 12年），其中49（平均年龄27，SD 8年）也参加了有效性的评估。重复Food 4 Me FFQ的粗未调整相关性范围从0.65（维生素D）到0.90（酒精）。营养素和食物组摄入量的平均交叉分类为“精确一致加相邻”为92%，Bland-Altman图显示能量调整后的常量营养素摄入量具有良好的一致性。Food 4 Me FFQ和4天WFR之间的一致性各不相同，营养素摄入量的粗未经调整的相关性范围为0.23（维生素D）至0.65（蛋白质，总能量%），食物组摄入量的粗未经调整的相关性范围为0.11（汤，酱汁和杂项食物）至0.73（酸奶）。平均交叉分类为“确切的协议加相邻”的营养素和食物组摄入量分别为80%和78%。使用Food 4 Me FFQ和4天WFR估计的能量摄入量之间没有显着差异，Bland-Altman图显示能量和能量控制的营养摄入量良好的协议。结论：结果表明，在线Food 4 Me FFQ是可重复的评估营养和食物组的摄入量，并有中度协议与4天WFR评估能量和能量调整的营养摄入量。Food 4 Me FFQ是评估健康成年人膳食摄入量的合适在线工具。
Background: Advances in nutritional assessment are continuing to embrace developments in computer technology. The online Food4Me food frequency questionnaire (FFQ) was created as an electronic system for the collection of nutrient intake data. To ensure its accuracy in assessing both nutrient and food group intake, further validation against data obtained using a reliable, but independent, instrument and assessment of its reproducibility are required.Objective: The aim was to assess the reproducibility and validity of the Food4Me FFQ against a 4-day weighed food record (WFR).Methods: Reproducibility of the Food4Me FFQ was assessed using test-retest methodology by asking participants to complete the FFQ on 2 occasions 4 weeks apart. To assess the validity of the Food4Me FFQ against the 4-day WFR, half the participants were also asked to complete a 4-day WFR 1 week after the first administration of the Food4Me FFQ. Level of agreement between nutrient and food group intakes estimated by the repeated Food4Me FFQ and the Food4Me FFQ and 4-day WFR were evaluated using Bland-Altman methodology and classification into quartiles of daily intake. Crude unadjusted correlation coefficients were also calculated for nutrient and food group intakes.Results: In total, 100 people participated in the assessment of reproducibility (mean age 32, SD 12 years), and 49 of these (mean age 27, SD 8 years) also took part in the assessment of validity. Crude unadjusted correlations for repeated Food4Me FFQ ranged from .65 (vitamin D) to .90 (alcohol). The mean cross-classification into "exact agreement plus adjacent" was 92% for both nutrient and food group intakes, and Bland-Altman plots showed good agreement for energy-adjusted macronutrient intakes. Agreement between the Food4Me FFQ and 4-day WFR varied, with crude unadjusted correlations ranging from .23 (vitamin D) to .65 (protein, % total energy) for nutrient intakes and .11 (soups, sauces and miscellaneous foods) to .73 (yogurts) for food group intake. The mean cross-classification into "exact agreement plus adjacent" was 80% and 78% for nutrient and food group intake, respectively. There were no significant differences between energy intakes estimated using the Food4Me FFQ and 4-day WFR, and Bland-Altman plots showed good agreement for both energy and energy-controlled nutrient intakes.Conclusions: The results demonstrate that the online Food4Me FFQ is reproducible for assessing nutrient and food group intake and has moderate agreement with the 4-day WFR for assessing energy and energy-adjusted nutrient intakes. The Food4Me FFQ is a suitable online tool for assessing dietary intake in healthy adults.