DIETARY UNDERREPORTING IN A NATIONAL NUTRITION SURVEY

饮食摄入量的测量是营养学的核心组成部分 research. 然而，各种测量误差几乎在所有 饮食评估方法建议谨慎解释 饮食数据。 误差的来源可以是系统的或随机的。 那里 越来越多的人认识到， 饮食调查是测量误差的来源。 膳食摄入 从所有自我报告的饮食评估方法中获得-24小时 回忆、记录、历史和食物频率问卷--已经被 被低估的能量摄入。 关于谁的信息有限 更有可能少报也是可用的。 例如，妇女和 超重的人更容易少报食物摄入量， 一些研究。 然而，人们对少报的情况知之甚少。 因为少报食物摄入量会使研究结果产生偏差 关注饮食和疾病的关系，这是一个重要的领域， 调查 这项小额赠款提案的目的是审查 具有国家代表性的数据， 少报 这项研究将使用来自第三次全国膳食调查的数据。 1988-1994年健康和营养调查（NHANES III） （n= 15，979），以确定什么是少报。 的具体目标 这项研究是为了确定食物组的摄入量或饮食 饮食报告不足者的行为与适当的行为不同， 记者说拟议研究的意义在于， 本研究将有助于：1）改善饮食的策略 评估方法，以及2）分析结果的解释 流行病学研究将食物摄入与疾病联系起来， 关于哪些食物可能被少报的信息。

Measurement of dietary intake is a central component of nutrition research. However, a variety of measurement errors in virtually all methods of dietary assessment suggest a cautious interpretation of dietary data. The sources of error may be systematic or random. There has been increasing recognition of underreporting of food intake in dietary surveys as a source of measurement error. Dietary intakes obtained from all self-reported methods of dietary assessment--24-hour recalls, records, history, and food frequency questionnaires--have been shown to be underestimates of energy intake. Limited information on who is more likely to underreport is also available. For example, women and overweight individuals were more likely to underreport food intake in some studies. However, little is known about what is underreported. Because underreporting of food intake can bias results of studies focusing on diet and disease relationships, it is an important area of investigation. The purpose of this small grant proposal is to examine nationally representative data to determine the nature of underreporting. The study will use dietary data from the third National Health and Nutrition Examination Survey (NHANES III), 1988-1994 (n=15,979), to determine what is underreported. The specific aims of this study are to determine whether food group intake or eating behaviors of dietary underreporters differ from those of adequate reporters. The significance of the proposed research is that findings of this study will help in: 1) strategies for improving dietary assessment methods, and 2) interpretation of results from analytic epidemiology studies relating food intake to disease by providing information on what kinds of foods are likely to be underreported.