DIETARY UNDERREPORTING IN A NATIONAL NUTRITION SURVEY

测量膳食摄入量是营养的核心组成部分。 研究。然而，各种测量误差几乎都存在于 饮食评估方法建议谨慎解读 饮食数据。误差源可能是系统性的，也可能是随机的。那里 已经越来越多地认识到在#年少报食物摄入量 饮食调查是测量误差的来源。膳食摄入量 来自所有自我报告的饮食评估方法--24小时 回忆、记录、历史和食物频率问卷--已经 显示出对能量摄入量的低估。关于谁的有限信息 更有可能少报也是可用的。例如，妇女和 超重的人更有可能少报食物摄入量 一些研究。然而，人们对哪些被低估的信息知之甚少。 因为少报食物摄入量会影响研究结果 专注于饮食和疾病关系，这是一个重要的领域 调查。这项小额拨款提案的目的是研究 确定其性质的具有全国代表性的数据 报道不足。这项研究将使用来自第三国家的饮食数据 健康和营养检查调查(NHANES III)，1988-1994 (n=15,979)，以确定哪些被漏报。的具体目标 这项研究旨在确定食物组的摄入量或进食量 饮食不足者的行为与饮食充足者的行为不同 记者。拟议研究的意义在于，研究结果 这项研究将有助于：1)改善饮食的策略 评估方法，以及2)分析结果的解释 通过提供食物摄入与疾病相关的流行病学研究 关于哪些食物可能被漏报的信息。

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.