NCT03400436|Completed
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Sponsor study identifier
observational
10,000
0 countries
N/A
Study Start
January 2011
Actual (reported)Primary Completion
December 2014
Actual (reported)Study Completion
December 2014
Actual (reported)Dietary supplements are an important contributor to overall nutrient exposures for a large proportion of the U.S. population. Currently no standardized method exists to measure their use and contribution to total nutrient intakes, substantially limiting the rigor and reproducibility of their measurement. The purpose of this proposed project is to develop a standardized, data-driven, and valid metric that can be to measure use of and nutrient exposures from dietary supplements for use in research, clinical, and monitoring settings.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
December 2014
Actual (reported)Click on a node to explore related trials.
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Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
January 2011
Actual (reported)December 2014
Actual (reported)December 2014
Actual (reported)November 2, 2017
Actual (reported)January 17, 2018
Actual (reported)Nutrient quality index
This study will develop the nutrient quality index; this will be the tool used to measure nutrient quality in other studies.
NHANES 2011 to 2014
No intervention in observational studies
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
The NHANES is a nationally representative, cross-sectional continuous survey that includes non-institutionalized, civilian U.S. residents using a complex, stratified, multistage probability cluster sampling design. The NHANES data are publicly available and are released in 2-year datasets to ensure confidentiality of the participants and to allow for adequate sample size for statistical analysis. The NHANES data are planned and collected by the National Center for Health Statistics of the Centers for Disease Control and Prevention. Written informed consent is obtained for all participants or proxies and the survey protocol is approved by the research ethics review board at the National Center for Health Statistics. Currently, we plan to use NHANES 2011-2012 and 2013-2014 data cycles because these are the first to include oversampling of non-Hispanic Asian Americans and have supplement intake data collected on both the 24HRs and the 30-day frequency questionnaire.
Jun S, Cowan AE, Dodd KW, Tooze JA, Gahche JJ, Eicher-Miller HA, Guenther PM, Dwyer JT, Potischman N, Bhadra A, Forman MR, Bailey RL. Association of food insecurity with dietary intakes and nutritional biomarkers among US children, National Health and Nutrition Examination Survey (NHANES) 2011-2016. Am J Clin Nutr. 2021 Sep 1;114(3):1059-1069. doi: 10.1093/ajcn/nqab113.
Cowan AE, Jun S, Tooze JA, Dodd KW, Gahche JJ, Eicher-Miller HA, Guenther PM, Dwyer JT, Moshfegh AJ, Rhodes DG, Bhadra A, Bailey RL. Comparison of 4 Methods to Assess the Prevalence of Use and Estimates of Nutrient Intakes from Dietary Supplements among US Adults. J Nutr. 2020 Apr 1;150(4):884-893. doi: 10.1093/jn/nxz306.
10,000 participants (actual enrollment reported by the registry).
First Submitted
November 2, 2017
First Posted
January 17, 2018
Study Start
January 2011
Actual (reported)Adaptation and Validation of a Nutrition Literacy Assessment Instrument
Contact the study team to confirm eligibility.
Bailey RL, Dodd KW, Gahche JJ, Dwyer JT, Cowan AE, Jun S, Eicher-Miller HA, Guenther PM, Bhadra A, Thomas PR, Potischman N, Carroll RJ, Tooze JA. Best Practices for Dietary Supplement Assessment and Estimation of Total Usual Nutrient Intakes in Population-Level Research and Monitoring. J Nutr. 2019 Feb 1;149(2):181-197. doi: 10.1093/jn/nxy264.
Primary Completion
December 2014
Actual (reported)Study Completion
December 2014
Actual (reported)Last Updated
January 17, 2018
Record last verified: 2018-01
NHANES data are publicly available
Download the complete ClinicalTrials.gov record imported by Syfrah, including fields not shown in this page. The registry may contain a newer revision.
Source: ClinicalTrials.gov.
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