Moshfegh Alanna J, Rhodes Donna G, Baer David J, Murayi Theophile, Clemens John C, Rumpler William V, Paul David R, Sebastian Rhonda S, Kuczynski Kevin J, Ingwersen Linda A, Staples Robert C, Cleveland Linda E
Beltsville Human Nutrition Research Center, Agricultural Research Service, US Department of Agriculture, Beltsville, MD, USA.
Am J Clin Nutr. 2008 Aug;88(2):324-32. doi: 10.1093/ajcn/88.2.324.
The US Department of Agriculture Automated Multiple-Pass Method (AMPM) is used for collecting 24-h dietary recalls in What We Eat In America, the dietary interview component of the National Health and Nutrition Examination Survey. Because the data have important program and policy applications, it is essential that the validity of the method be tested.
The accuracy of the AMPM was evaluated by comparing reported energy intake (EI) with total energy expenditure (TEE) by using the doubly labeled water (DLW) technique.
The 524 volunteers, aged 30-69 y, included an equal number of men and women recruited from the Washington, DC, area. Each subject was dosed with DLW on the first day of the 2-wk study period; three 24-h recalls were collected during the 2-wk period by using the AMPM. The first recall was conducted in person, and subsequent recalls were over the telephone.
Overall, the subjects underreported EI by 11% compared with TEE. Normal-weight subjects [body mass index (in kg/m(2)) < 25] underreported EI by <3%. By using a linear mixed model, 95% CIs were determined for the ratio of EI to TEE. Approximately 78% of men and 74% of women were classified as acceptable energy reporters (within 95% CI of EI:TEE). Both the percentage by which energy was underreported and the percentage of subjects classified as low energy reporters (<95% CI of EI:TEE) were highest for subjects classified as obese (body mass index > 30).
Although the AMPM accurately reported EIs in normal-weight subjects, research is warranted to enhance its accuracy in overweight and obese persons.
美国农业部自动多次通过法（AMPM）用于在美国国家健康与营养检查调查的饮食访谈部分“我们吃什么”中收集24小时饮食回顾。由于这些数据具有重要的项目和政策应用价值，因此检验该方法的有效性至关重要。
通过使用双标水（DLW）技术将报告的能量摄入量（EI）与总能量消耗（TEE）进行比较，评估AMPM的准确性。
524名年龄在30 - 69岁的志愿者，男女数量相等，从华盛顿特区地区招募。在为期2周的研究期的第一天，给每位受试者服用DLW；在这2周内通过AMPM收集三次24小时饮食回顾。第一次回顾是面对面进行的，后续回顾通过电话进行。
总体而言，与TEE相比，受试者报告的EI低报了11%。正常体重受试者[体重指数（kg/m²）<25]的EI低报<3%。通过线性混合模型，确定了EI与TEE比值的95%置信区间。大约78%的男性和74%的女性被归类为可接受的能量报告者（EI:TEE在95%置信区间内）。对于被归类为肥胖（体重指数>30）的受试者，能量低报的百分比和被归类为低能量报告者（EI:TEE<95%置信区间）的受试者百分比最高。
尽管AMPM能准确报告正常体重受试者的EI，但仍有必要进行研究以提高其在超重和肥胖人群中的准确性。
