Validation of energy intake estimated from a food frequency questionnaire: a doubly labelled water study
Validation of energy intake estimated from a food frequency questionnaire: a doubly labelled water study
复制标题
DOI：
10.1038/sj.ejcn.1601519
复制
发表时间：
2003-02-01
影响因子：
4.7
通讯作者：
Hustvedt, BE
中科院分区：
文献类型：
--
作者：
Andersen, LF;Tomten, H;Hustvedt, BE
目的：膳食评价方法的有效性是评价膳食摄入与健康关系的关键。本研究的目的是评估食物频率问卷的有效性，通过比较能量摄入量与能量支出测量的双标记水method.Design：总能量支出测量与双标记水（DLW）的方法在10天的时间。研究对象：21名健康非妊娠女性自愿参加本研究，仅17名受试者完成研究。结果：两组能量摄入量平均比能量消耗量低10%，但差异无统计学意义。然而，报告准确性的范围很广：7名受试者被确定为可接受的报告者，8名被确定为报告不足者，2名被确定为过度报告者。在Bland和Altman图的能量摄入和能量消耗的95%置信限的协议的宽度变化从-5至3兆焦耳。结论：数据显示，有很大的变异性在个人水平上的食物频率问卷的准确性。此外，调查结果表明，该问卷是更准确的群体比个人。
Objective: The validation of dietary assessment methods is critical in the evaluation of the relation between dietary intake and health. The aim of this study was to assess the validity of a food frequency questionnaire by comparing energy intake with energy expenditure measured with the doubly labelled water method.Design: Total energy expenditure was measured with the doubly labelled water (DLW) method during a 10 day period. Furthermore, the subjects filled in the food frequency questionnaire about 18-35 days after the DLW phase of the study was completed.Subjects: Twenty-one healthy, non-pregnant females volunteered to participate in the study; only 17 subjects completed the study.Results: The group energy intake was on average 10% lower than the energy expenditure, but the difference was not statistically significant. However, there was a wide range in reporting accuracy: seven subjects were identified as acceptable reporters, eight as under-reporters and two were identified as over-reporters. The width of the 95% confidence limits of agreement in a Bland and Altman plot for energy intake and energy expenditure varied from -5 to 3 MJ.Conclusion: The data showed that there was substantial variability in the accuracy of the food frequency questionnaire at the individual level. Furthermore, the results showed that the questionnaire was more accurate for groups than individuals.