Pooled Results From 5 Validation Studies of Dietary Self-Report Instruments Using Recovery Biomarkers for Energy and Protein Intake
Pooled Results From 5 Validation Studies of Dietary Self-Report Instruments Using Recovery Biomarkers for Energy and Protein Intake
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DOI：
10.1093/aje/kwu116
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发表时间：
2014-07-15
影响因子：
5
通讯作者：
Willett, Walter
中科院分区：
文献类型：
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作者：
Freedman, Laurence S.;Commins, John M.;Willett, Walter
我们汇总了来自5项饮食自我报告工具的大型验证研究的数据，这些研究使用恢复生物标志物作为参考，以澄清食物频率问卷（FFQ）和24小时回忆的测量特性。这些研究是在1999年至2009年期间在差异很大的美国成年人群中进行的。我们报告总能量，蛋白质和蛋白质密度摄入量。不同性别之间的结果相似，但不同研究之间存在异质性。使用FFQ，报告的能量、蛋白质和蛋白质密度摄入量与真实摄入量的平均相关系数分别为0.21、0.29和0.41。使用单一的24小时回忆，系数分别为0.26，0.40和0.36，对于相同的营养素，当三个24小时回忆平均时，分别上升到0.31，0.49和0.46。在FFQ中，能量摄入的平均漏报率为28%，在24小时回忆中为15%，但蛋白质的比例较低。与漏报相关的个人特征包括体重指数、教育水平和年龄。包括个人特征的真实摄入量校准方程提供了改进的预测。该项目确定FFQ与蛋白质密度的真实性比绝对蛋白质摄入量的真实性更强，与单一24小时回忆相比，使用多次24小时回忆大大增加了相关性，并且身体质量指数强烈预测能量和蛋白质摄入量的低报。
We pooled data from 5 large validation studies of dietary self-report instruments that used recovery biomarkers as references to clarify the measurement properties of food frequency questionnaires (FFQs) and 24-hour recalls. The studies were conducted in widely differing US adult populations from 1999 to 2009. We report on total energy, protein, and protein density intakes. Results were similar across sexes, but there was heterogeneity across studies. Using a FFQ, the average correlation coefficients for reported versus true intakes for energy, protein, and protein density were 0.21, 0.29, and 0.41, respectively. Using a single 24-hour recall, the coefficients were 0.26, 0.40, and 0.36, respectively, for the same nutrients and rose to 0.31, 0.49, and 0.46 when three 24-hour recalls were averaged. The average rate of under-reporting of energy intake was 28% with a FFQ and 15% with a single 24-hour recall, but the percentages were lower for protein. Personal characteristics related to under-reporting were body mass index, educational level, and age. Calibration equations for true intake that included personal characteristics provided improved prediction. This project establishes that FFQs have stronger correlations with truth for protein density than for absolute protein intake, that the use of multiple 24-hour recalls substantially increases the correlations when compared with a single 24-hour recall, and that body mass index strongly predicts under-reporting of energy and protein intakes.