Relative validity of fruit and vegetable intake estimated by the food frequency questionnaire used in the Danish National Birth Cohort
Relative validity of fruit and vegetable intake estimated by the food frequency questionnaire used in the Danish National Birth Cohort
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DOI：
10.1080/14034940600975625
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发表时间：
2007-01-01
影响因子：
3.4
通讯作者：
Osler, Merete
中科院分区：
文献类型：
--
作者：
Mikkelsen, Tina B.;Olsen, Sjurdur F.;Osler, Merete
目的：验证丹麦国家出生队列（DNBC）中使用的食物频率问卷（FFQ）估计的水果和蔬菜摄入量。研究对象和背景：丹麦的101042名孕妇在妊娠第25周通过邮件收到FFQ。对88名参与者进行了验证性研究。采用7天称重食物日记（FD）和三种不同的生物标志物作为比较方法。结果：水果的FFQ值与fd值之间存在显著相关性（r=0.66）；蔬菜(r = 0.32);果汁(r = 0.52);水果和蔬菜（F&V） （r=0.57）；水果、蔬菜和果汁（r=0.62）。FFQ对F&V&J摄入量最低和最高两分位数的正确分类敏感性分别为58-67%和50-74%，特异性分别为71-79%和65-83%。从FFQ中估计的F&V&J摄入量与尿中黄酮类化合物显著相关(r=0.39, p
Objective: To validate the fruit and vegetable intake estimated from the Food Frequency Questionnaire (FFQ) used in the Danish National Birth Cohort (DNBC). Subjects and setting: The DNBC is a cohort of 101,042 pregnant women in Denmark, who received a FFQ by mail in gestation week 25. A validation study with 88 participants was made. A seven-day weighed food diary (FD) and three different biomarkers were employed as comparison methods. Results: Significant correlations between FFQ and FD-based estimates were found for fruit (r=0.66); vegetables (r=0.32); juice (r=0.52); fruit and vegetables (F&V) (r=0.57); and fruit, vegetables, and juice (F&V&J) (r=0.62). Sensitivities of correct classification by FFQ into the two lowest and the two highest quintiles of F&V&J intake were 58-67% and 50-74%, respectively, and specificities were 71-79% and 65-83%, respectively. F&V&J intake estimated from the FFQ correlated significantly with urinary flavonoids ( r=0.39, p