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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，对测量膳食摄入量和身体活动的低成本且准确的方法的需求日益增长。该提案要求提供资金来检查两种新的饮食评估工具的准确性，即计算机辅助自我访谈饮食历史 (CASI-DH)，该工具是根据饮食历史的优点、最强的饮食评估方法之一和全自动多媒体 24 小时回忆：DIETDAY 建模的。 CASI-DH 是一种基于网络的自我访谈方法，基于膳食音频和食物图片；生成营养和食物摄入量估计值；具有广泛的组件来评估膳食补充剂的使用，并提供反馈以帮助人们采取更健康的饮食习惯。它与食物频率调查问卷在许多显着方面有所不同，因为它是完全定量的，包括数千种食物，以膳食为基础，并且不会截断食物或食用频率。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和食物摄入量，并使用 DIETDA 在 150 名非裔美国人和 150 名白种人成年人样本中客观验证生物标志物，来测试这些新工具捕获通常死亡的准确度。用双标水补充总能量24小时尿氮蛋白质；尿钾替代膳食钾；水果、蔬菜和营养补充剂使用的营养素（类胡萝卜素和生育酚）的血液水平。还将追求一些次要目标，包括验证两份身体活动问卷和两种不同的 DLW 加速测量方法。为了研究 CASI-DH、DIETDAY 和 DLW 的可重复性，将对 100 人的子集进行重复测量，间隔 6 个月。由于其低成本、系统的语言独立性以及对图像进行准确通信的依赖，CASI-DH 和 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。 CASI-DH 或 DIETDAY 的成功验证将代表营养流行病学方面的重要方法学进展。流行病学。这项研究也将有助于增强我们对多种族人群的饮食和活动评估工具的信心。