Subar Amy F, Kipnis Victor, Troiano Richard P, Midthune Douglas, Schoeller Dale A, Bingham Sheila, Sharbaugh Carolyn O, Trabulsi Jillian, Runswick Shirley, Ballard-Barbash Rachel, Sunshine Joel, Schatzkin Arthur
Applied Research Program, Division of Cancer Control and Population Sciences, National Cancer Institute, Bethesda, MD, USA.
Am J Epidemiol. 2003 Jul 1;158(1):1-13. doi: 10.1093/aje/kwg092.
This paper describes the Observing Protein and Energy Nutrition (OPEN) Study, conducted from September 1999 to March 2000. The purpose of the study was to assess dietary measurement error using two self-reported dietary instruments-the food frequency questionnaire (FFQ) and the 24-hour dietary recall (24HR)-and unbiased biomarkers of energy and protein intakes: doubly labeled water and urinary nitrogen. Participants were 484 men and women aged 40-69 years from Montgomery County, Maryland. Nine percent of men and 7% of women were defined as underreporters of both energy and protein intake on 24HRs; for FFQs, the comparable values were 35% for men and 23% for women. On average, men underreported energy intake compared with total energy expenditure by 12-14% on 24HRs and 31-36% on FFQs and underreported protein intake compared with a protein biomarker by 11-12% on 24HRs and 30-34% on FFQs. Women underreported energy intake on 24HRs by 16-20% and on FFQs by 34-38% and underreported protein intake by 11-15% on 24HRs and 27-32% on FFQs. There was little underreporting of the percentage of energy from protein for men or women. These findings have important implications for nutritional epidemiology and dietary surveillance.
本文描述了1999年9月至2000年3月进行的观察蛋白质和能量营养（OPEN）研究。该研究的目的是使用两种自我报告的饮食工具——食物频率问卷（FFQ）和24小时饮食回顾（24HR）以及能量和蛋白质摄入量的无偏生物标志物：双标水和尿氮，来评估饮食测量误差。参与者是来自马里兰州蒙哥马利县的484名年龄在40至69岁之间的男性和女性。在24小时饮食回顾中，9%的男性和7%的女性被定义为能量和蛋白质摄入量的低报者；对于食物频率问卷，男性和女性的相应比例分别为35%和23%。平均而言，男性在24小时饮食回顾中能量摄入量比总能量消耗低报12%至14%，在食物频率问卷中低报31%至36%；在24小时饮食回顾中蛋白质摄入量比蛋白质生物标志物低报11%至12%，在食物频率问卷中低报30%至34%。女性在24小时饮食回顾中能量摄入量低报16%至20%，在食物频率问卷中低报34%至38%；在24小时饮食回顾中蛋白质摄入量低报11%至15%，在食物频率问卷中低报27%至32%。男性或女性从蛋白质中获取的能量百分比几乎没有低报情况。这些发现对营养流行病学和饮食监测具有重要意义。
