There is an increasing demand for low cost and accurate methods to measure dietary intake and physical activity in epidemiologic studies. This proposal requests funds to examine the precision of two new dietary assessment tool, the Computer-Assisted Self-Interview Diet History (CASI-DH), which is modeled after the strengths of the diet history, one of the strongest dietary assessment approaches and ana fully automated 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 component 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, includes thousands of foods, is meal-based, and does not truncate foods or frequencies of consumption. The objective of the validation study proposed here is to test how accurately these new tools capture usual diet by comparing self-reported nutrient and food intakes obtained through the CASI-DH and using the DIETDAY 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 nutrients (carotenoids and tocopherols) for fruits, vegetables, and nutritional supplement use. A number of secondary aims will also be pursued, including validation of two physical activity questionnaires and two different accelerometry approaches to DLW. To study the reproducibility of the CASI-DH, DIETDAY and DLW, repeat measures will be conducted on a subset of 100 persons 6 months apart. Due to its low cost, the language independence of the system, and the reliance on images for accurate communication, the CASI-DH and DIETDAY present unique opportunities for epidemiologic research in various populations for assessment of complex dietary exposures. Successful validation of either the CASI-DH or the DIETDAY will represent important methodological advances in nutritional epidemiology.Theepidemiology. The study will also contribute to our confidence in these dietary and activity assessment instruments in multiracial populations.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Research Project (R01)
Project #
5R01CA105048-03
Application #
7355593
Study Section
Special Emphasis Panel (ZRG1-HOP-D (50))
Program Officer
Perna, Frank
Project Start
2006-06-28
Project End
2010-12-31
Budget Start
2008-02-01
Budget End
2009-01-31
Support Year
3
Fiscal Year
2008
Total Cost
$504,504
Indirect Cost
Name
University of California Los Angeles
Department
Public Health & Prev Medicine
Type
Schools of Public Health
DUNS #
092530369
City
Los Angeles
State
CA
Country
United States
Zip Code
90095
Emond, J A; Patterson, R E; Jardack, P M et al. (2014) Using doubly labeled water to validate associations between sugar-sweetened beverage intake and body mass among White and African-American adults. Int J Obes (Lond) 38:603-9
Wang, J B; Patterson, R E; Ang, A et al. (2014) Timing of energy intake during the day is associated with the risk of obesity in adults. J Hum Nutr Diet 27 Suppl 2:255-62
Patterson, Ruth E; Emond, Jennifer A; Natarajan, Loki et al. (2014) Short sleep duration is associated with higher energy intake and expenditure among African-American and non-Hispanic white adults. J Nutr 144:461-6
Semba, R D; Ang, A; Talegawkar, S et al. (2012) Dietary intake associated with serum versus urinary carboxymethyl-lysine, a major advanced glycation end product, in adults: the Energetics Study. Eur J Clin Nutr 66:3-9
Lebold, Katie M; Ang, Alfonso; Traber, Maret G et al. (2012) Urinary ýý-carboxyethyl hydroxychroman can be used as a predictor of ýý-tocopherol adequacy, as demonstrated in the Energetics Study. Am J Clin Nutr 96:801-9
Arab, L; Estrin, D; Kim, D H et al. (2011) Feasibility testing of an automated image-capture method to aid dietary recall. Eur J Clin Nutr 65:1156-62
Arab, Lenore; Cambou, Mary C; Craft, Neal et al. (2011) Racial differences in correlations between reported dietary intakes of carotenoids and their concentration biomarkers. Am J Clin Nutr 93:1102-8
Arab, Lenore; Tseng, Chi-Hong; Ang, Alfonso et al. (2011) Validity of a multipass, web-based, 24-hour self-administered recall for assessment of total energy intake in blacks and whites. Am J Epidemiol 174:1256-65
Arab, Lenore; Hahn, Harry; Henry, Judith et al. (2010) Using the web for recruitment, screen, tracking, data management, and quality control in a dietary assessment clinical validation trial. Contemp Clin Trials 31:138-46
Arab, Lenore; Wesseling-Perry, Kate; Jardack, Patricia et al. (2010) Eight self-administered 24-hour dietary recalls using the Internet are feasible in African Americans and Whites: the energetics study. J Am Diet Assoc 110:857-64