The reliability of a food frequency questionnaire for use among adolescents
The reliability of a food frequency questionnaire for use among adolescents
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DOI：
10.1038/ejcn.2009.44
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发表时间：
2009-10-01
影响因子：
4.7
通讯作者：
Oddy, W. H.
中科院分区：
文献类型：
--
作者：
Ambrosini, G. L.;de Klerk, N. H.;Oddy, W. H.
背景：准确测量饮食摄入量对于了解青少年饮食对慢性病风险的长期影响至关重要。然而，青少年可能有有限的食物知识和能力来量化部分大小和回忆饮食摄入量。因此，食物频率问卷（FFQs）被认为适用于成年人，但可能不适用于青少年。目的：在西澳大利亚州一项基于人群的队列研究中，对14岁青少年进行FFQ与3天食物记录（FR）的比较。通过半定量FFQ估计的营养素摄入量与使用Bland & Altman一致性限（LOA）的3天FR进行比较，结果：共有785名青少年提供了两种饮食方法的数据。FR和FFQ之间的平均一致性范围为73%（淀粉）至161%（维生素C）。LOA范围从27（视黄醇）到976%（胡萝卜素），大多数营养素被FFQ高估。对于大多数营养素，这两种方法之间的一致性随摄入量的大小而显着变化。Pearson相关系数从0.11（多不饱和脂肪）到0.52（核黄素）不等。FFQ分类80至90%的受试者的营养摄入量到相同或相邻的三分位数作为他们的FR. Boys表现稍好，所有这些indics.Conclusions：个别FFQ和FR营养摄入量之间的协议是不理想的。然而，FFQ能够正确地对合理比例的青少年进行排名。欧洲临床营养学杂志（2009）63，1251-1259; doi：10.1038/ejcn.2009.44; 2009年6月24日在线发表
Background: Accurate measurement of dietary intake is essential for understanding the long-term effects of adolescent diet on chronic disease risk. However, adolescents may have limited food knowledge and ability to quantify portion sizes and recall dietary intake. Therefore, food frequency questionnaires (FFQs) deemed appropriate for use among adults may not be suitable for adolescents.Objectives: To evaluate an FFQ in comparison with a 3-day food record (FR) in 14-year olds participating in a population-based cohort study in Western Australia.Methods: Nutrient intakes estimated by a semi-quantitative FFQ were compared with those from a 3-day FR using Bland & Altman limits of agreement (LOA), tertile classifications and Pearson's correlation coefficients.Results: A total of 785 adolescents provided data from both dietary methods. Mean agreement between the FR and FFQ ranged from 73 (starch) to 161% (vitamin C). The LOA ranged from 27 (retinol) to 976% (carotene), with most nutrients being overestimated by the FFQ. For most nutrients, agreement between the two methods varied significantly with the magnitude of intake. Pearson's r ranged from 0.11 (polyunsaturated fats) to 0.52 (riboflavin). The FFQ classified 80 to 90% of subjects' nutrient intakes into the same or adjacent tertile as their FR. Boys performed slightly better for all of these indices.Conclusions: Agreement between individual FFQ and FR nutrient intakes was less than ideal. However, the FFQ was able to correctly rank a reasonable proportion of adolescents. European Journal of Clinical Nutrition (2009) 63, 1251-1259; doi:10.1038/ejcn.2009.44; published online 24 June 2009