Correlations between Fruit, Vegetables, Fish, Vitamins, and Fatty Acids Estimated by Web-Based Nonconsecutive Dietary Records and Respective Biomarkers of Nutritional Status
Correlations between Fruit, Vegetables, Fish, Vitamins, and Fatty Acids Estimated by Web-Based Nonconsecutive Dietary Records and Respective Biomarkers of Nutritional Status
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DOI：
10.1016/j.jand.2015.09.017
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发表时间：
2016-03-01
影响因子：
4.8
通讯作者：
Kesse-Guyot, Emmanuelle
中科院分区：
文献类型：
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作者：
Lassale, Camille;Castetbon, Katia;Kesse-Guyot, Emmanuelle
目的本研究的目的是验证在NutriNet-Sant前瞻性队列研究中使用的基于网络的自我饮食记录工具所评估的鱼、水果和蔬菜的自我报告的摄入量和选定的微量营养素的摄入量，并与以下浓度生物标志物进行比较：血浆β胡萝卜素、维生素C和n-3多不饱和脂肪酸。参与者/设置189名成年志愿者(103名男性和95名女性，平均年龄=50.5岁)包括在方案中：他们完成了3个非连续天的饮食记录，并相隔3周抽取两个血样。这项研究于2012年10月至2013年5月在法国巴黎地区进行。报告的主要观察指标包括鱼类、水果和蔬菜，以及选定的微量营养素摄入量和血浆β胡萝卜素、维生素C和n-3多不饱和脂肪酸水平。统计分析简单和调整后的Spearman等级相关系数在个体内变量去衰减后估计。结果关于男性食物类别，调整后的相关系数范围为蔬菜和血浆维生素C的0.20到水果和血浆维生素C的0.49，鱼和血浆c20：5n-3(二十碳五烯酸[EPA])的0.40到0.55(鱼和血浆c22：6n-3(二十二碳六烯酸))。在女性中，蔬菜和血浆维生素C的相关性从0.13(不显著)到水果蔬菜和血浆β胡萝卜素的0.41，高脂肪鱼类和EPA的相关性从0.27到鱼类和EPA+二十二碳六烯酸的0.54。关于微量营养素，调整后的相关系数男性为0.36(EPA)至0.58(维生素C)，女性为0.32(维生素C)至0.38(EPA)。结论研究结果表明，3个非连续的基于网络的饮食记录为水果、蔬菜、鱼类、β-胡萝卜素、维生素C和n-3脂肪酸的真实摄入量提供了合理的估计。与其他验证性研究一起，这项研究表明在大型流行病学调查中使用这种饮食评估方法的有效性是可以接受的，并为流行病学开辟了新的视角。
Background It is of major importance to measure the validity of self-reported dietary intake using web-based instruments before applying them in large-scale studies.Objective This study aimed to validate self-reported intake of fish, fruit and vegetables, and selected micronutrient intakes assessed by a web-based self-administered dietary record tool used in the NutriNet-Sant prospective cohort study, against the following concentration biomarkers: plasma beta carotene, vitamin C, and n-3 polyunsaturated fatty acids.Participants/setting One hundred ninety-eight adult volunteers (103 men and 95 women, mean age=50.5 years) were included in the protocol: they completed 3 nonconsecutive-day dietary records and two blood samples were drawn 3 weeks apart. The study was conducted in the area of Paris, France, between October 2012 and May 2013.Main outcome measures Reported fish, fruit and vegetables, and selected micronutrient intakes and plasma beta carotene, vitamin C, and n-3 polyunsaturated fatty acid levels were compared.Statistical analyses Simple and adjusted Spearman's rank correlation coefficients were estimated after de-attenuation for intra-individual variation.Results Regarding food groups in men, adjusted correlations ranged from 0.20 for vegetables and plasma vitamin C to 0.49 for fruits and plasma vitamin C, and from 0.40 for fish and plasma c20:5 n-3 (eicosapentaenoic acid [EPA]) to 0.55 for fish and plasma c22:6 n-3 (docosahexaenoic acid). In women, correlations ranged from 0.13 (nonsignificant) for vegetables and plasma vitamin C to 0.41 for fruits and vegetables and plasma beta carotene, and from 0.27 for fatty fish and EPA to 0.54 for fish and EPA+docosahexaenoic acid. Regarding micronutrients, adjusted correlations ranged from 0.36 (EPA) to 0.58 (vitamin C) in men and from 0.32 (vitamin C) to 0.38 (EPA) in women.Conclusions The findings suggest that three nonconsecutive web-based dietary records provide reasonable estimates of true intake of fruits, vegetables, fish, beta carotene, vitamin C, and n-3 fatty acids. Along with other validation studies, this study shows acceptable validity of using such diet-assessment methods in large epidemiologic surveys and broadens new perspectives for epidemiology.