Poster Topical Area: Nutritional Epidemiology
Location: Hall D
Poster Board Number: 760
Objectives: There is growing pressure in the area of dietary intake assessment to improve the accuracy and reduce costs of data collection and processing. New technology-based tools are available and more are under development, including web-based programs, mobile applications, and digital image-assisted and digital image-based tools, among others. The ILSI Europe Dietary Intake and Exposure Task Force launched this project to characterize and evaluate technology-based dietary assessment tools in order to develop general quality standards for future applications.
Methods: A comprehensive literature review identified new technology-based tools using key word searches with the following inclusion criteria: publications were in English, papers were published from 2011-July 2017, and the tool features, functions and uses were detailed. A total of 43 dietary assessment tools were identified. Scoring criteria were developed to evaluate tool features, results outputs, sources and completeness of food composition data, target audience and suitability for research. Each tool was rated on 25 attributes.
Results: Most of the tools identified (34/43) relied on self-reporting of dietary intake data, either through web-based programs or mobile apps. Fourteen used digital images to help identify foods consumed, and three used barcode scanners. Only 28/43 had integrated databases for estimating energy or nutrients. Most reported energy (28/43) and macronutrients (30/43), but fewer reported micronutrients (23/43) and food groups (29/43). Only 23/43 generated automatic reports. Most tools reported on usability (33/43) and some compared their tool with another method of assessment (32/43).
Conclusion: Dietary assessment methods that utilize technology provide rapid feedback to users and offer potential cost-savings for researchers. There remain gaps in many of these tools before they will be ready to replace more traditional interview-based methods for research purposes, and most require validity testing, additional description of the food composition tables used and details on how the foods are identified and quantified. This project will provide perspective on quality standards that could be recommended for future development and reporting of technologies in the area of dietary intake assessment.
Expert Scientist, Dietary Intake
Institute of Nutritional Science
Lausanne-26, Vaud, Switzerland