Validation of Web-based Multimedia Dietary Assessment Tools

基于网络的多媒体饮食评估工具的验证

• 批准号: 7557889
• 负责人: Lenore Arab
• 金额: $ 46.72万
• 依托单位: UNIVERSITY OF CALIFORNIA LOS ANGELES
• 依托单位国家: 美国
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-06-28 至 2011-01-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7557889
• 关键词: Adopted; Adult; African American; Age; Benzoic Acids; Biological; Biological Markers; Biological Markers; Blood; Carotenoids; Caucasians; Caucasoid Race; Communication; Communities; Complex; Computer Assisted; Computer Systems; Computer software; Consumption; Counseling; Data; Diet; Diet Habits; Dietary Assessment; Dietary Potassium; Dietary intake; Eating; Education; Energy Intake; Energy Metabolism; Epidemiologic Studies; Ethnic group; Feedback; Food; Frequencies; Funding; Goals; Gold; Hour; Image; Immune; Individual; Individual Differences; Intake; Internet; Interview; Label; Language; Measurement; Measures; Methods; Modeling; Multimedia; Nitrogen; Nutrient; Nutritional; Online Systems; Patient Self-Report; Personal Computers; Persons; Physical activity; Population; Potassium; Proteins; Published Comment; Questionnaires; Recording of previous events; Records; Recovery; Reliance; Reproducibility; Request for Proposals; Research; Research Design; Research Personnel; Sampling; Scientist; Self-Administered; Structure; System; Techniques; Testing; Time; Tocopherols; Validation; Vitamin E; Water; alpha Tocopherol; base; cost; design; dietary supplements; fruits and vegetables; gamma-Tocopherol; instrument; nutrient blood level; nutrition; tool; urinary; validation studies

DESCRIPTION: There is an increasing demand for low cost and accurate methods to measure dietary intake and physica activity in epidemiologic studies. This proposal requests funds to examine the precision of two new dietar assessment tool, the Computer-Assisted Self-Interview Diet History (CASI-DH), which is modeled after th strengths of the diet history, one of the strongest dietary assessment approaches and ana fully automate multimedia 24 hour recall: DIETDAY. The CASI-DH is a web-based, self-interview approach that is meal- audio-, and food picture-based; generates nutrient and food intake estimates; has an extensive componen to assess dietary supplement use and provides feedback to help people adopt more healthful dietary habits It differs in many significant ways from food frequency questionnaires in that it is fully quantitative, include thousands of foods, is meal-based, and does not truncate foods or frequencies of consumption. Th objective of the validation study proposed here is to test how accurately these new tools capture usual die by comparing self-reported nutrient and food intakes obtained through the CASI-DH and using the DIETDA to objective validation biomarkers in a sample of 150 African American and 150 Caucasian adults Specifically, we aim to examine the validity of both instruments for intakes of nutrients (total energy, protein and potassium), vegetables and fruits and supplement use by using doubly labeled water for total energy 24-hour urinary nitrogen for protein; urinary potassium for dietary potassium; and blood levels of nutrient (carotenoids and tocopherols) for fruits, vegetables, and nutritional supplement use. A number of secondar aims will also be pursued, including validation of two physical activity questionnaires and two differen accelerometry approaches to DLW. To study the reproducibility of the CASI-DH, DIETDAY and DLW, repea measures will be conducted on a subset of 100 persons 6 months apart. Due to its low cost, the languag independence of the system, and the reliance on images for accurate communication, the CASI-DH an DIETDAY present unique opportunities for epidemiologic research in various populations for assessment o complex dietary exposures. Successful validation of either the CASI-DH or the DIETDAY will represen important methodological advances in nutritional epidemiology.Theepidemiology. The study will als contribute to our confidence in these dietary and activity assessment instruments in multiracial populations.

描述：在流行病学研究中，对测量膳食摄入量和体力活动的低成本和准确方法的需求越来越大。这项提议要求资金来检查两个新的饮食评估工具的精确度，计算机辅助自访饮食历史(CASI-DH)是根据饮食历史的优点而建立的，是最强大的饮食评估方法之一，并且是一个完全自动化的多媒体24小时回忆：DIETDAY。CASI-DH是一种基于网络的自我访谈方法，以膳食音频和食物图片为基础；生成营养和食物摄入量估计；具有广泛的组成部分，用于评估膳食补充剂的使用并提供反馈，以帮助人们养成更健康的饮食习惯。它在许多方面与食物频率问卷有很大不同，因为它是完全定量的，包括数千种食物，以膳食为基础，不截断食物或消费频率。这里提出的验证研究的目的是通过比较通过CASI-DH获得的自我报告的营养素和食物摄入量，并使用DIETDA来客观地验证150名非裔美国人和150名高加索成年人的样本，来测试这些新工具捕获通常死亡的准确性。具体地说，我们的目标是检查这两种工具在营养素(总能量、蛋白质和钾)、蔬菜和补充剂使用方面的有效性，通过使用总能量的双标签水24小时尿氮用于蛋白质；尿钾用于膳食钾；以及血液中的营养素水平(胡萝卜素和生育酚)用于水果、蔬菜和营养补充剂的使用。还将实现若干次级目标，包括验证两份体力活动问卷和两种不同的DLW加速度法。为了研究CASI-DH、DIETDAY和DLW的重复性，将在每隔6个月对100人进行重复测量。由于其低成本、系统的语言独立性以及依靠图像进行准确的交流，CASI-DHANDIETDAY为评估复杂的饮食暴露而在不同人群中进行流行病学研究提供了独特的机会。CASI-DH或DIETDAY的成功验证将代表着营养流行病学的重要方法学进步。这项研究将有助于我们在多种族人群中对这些饮食和活动评估工具的信心。