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

基本信息

批准号：
7763810
负责人：
Lenore Arab
金额：
$ 31.37万
依托单位：
UNIVERSITY OF CALIFORNIA LOS ANGELES
依托单位国家：
美国
项目类别：
财政年份：
2006
资助国家：
美国
起止时间：
2006-06-28 至 2012-01-31
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/7763810
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 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

项目摘要

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.

在流行病学研究中，对低成本和准确方法的需求越来越多。该提案要求资金检查两个新的Dietar评估工具的精确度，即计算机辅助的自我采访饮食历史记录（CASI-DH），该工具以饮食史的强度为基础，是最强的饮食评估方法之一，ANA全自动自动化多自动化的多媒介24小时24小时回忆：Diet Day：Diet Day。 CASI-DH是一种基于网络的自我访问方法，是餐音音频和基于食物的。产生营养和食物摄入量；具有广泛的组合来评估饮食补充剂的使用，并提供反馈，以帮助人们采用更健康的饮食习惯，其与食品频率问卷的不同方式不同，因为它具有完全定量的，包括成千上万的食物，是基于餐食的，并且不会截断食物或消费量。此处提出的验证研究的目的是测试这些新工具通过比较通过CASI-DH获得的自我报告的营养和食物摄入量准确地捕获了通常的死亡，并使用DietDA在150名非裔美国人和150个白种人成人的样本中进行客观验证生物标志物，具体来说，我们旨在检查两种仪器和任何仪器的有效性（总体和均能）的水平（我们）的水平（均可（通过使用双重标记的水以总能量为蛋白质24小时的尿液氮总能量来补充使用；饮食钾的尿钾；以及用于水果，蔬菜和营养补充剂的养分（类胡萝卜素和生育酚）的血液水平。还将追求许多二级目标，包括验证两项体育活动问卷和两种差异化加速度测定法DLW。为了研究CASI-DH，DIETDAY和DLW的可重复性，将在相隔6个月的100人中进行重复措施。由于其成本较低，系统的独立性以及对准确交流的图像的依赖，casi-dh dietday为各种人群的流行病学研究提供了独特的机会，以评估复杂的饮食暴露。成功验证CASI-DH或DIET日将代表营养流行病学的重要方法论。该研究将使我们对这些饮食和活动评估工具的信心有助于多种族种群。