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Reproducibility of the online Food4Me food-frequency questionnaire for estimating dietary intakes across Europe

Marshall, S. J., Livingstone, K. M., Celis-Morales, C., Forster, H., Fallaize, R., O’Donovan, C. B., Woolhead, C., Marsaux, C. F. M., Macready, A. L., Navas-Carretero, S., San-Cristobal, R., Kolossa, S., Tsirigoti, L., Lambrinou, C. P., Moschonis, G., Godlewska, M., Surwillo, A., Drevon, C. A., Manios, Y., Traczyk, I. , Martınez, J. A., Saris, W. H. M., Daniel, H., Gibney, E. R., Brennan, L., Walsh, M. C., Lovegrove, J. A., Gibney, M. and Mathers, J. C. (2016) Reproducibility of the online Food4Me food-frequency questionnaire for estimating dietary intakes across Europe. Journal of Nutrition, 146 (5). pp. 1068-1075. ISSN 0022-3166

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To link to this item DOI: 10.3945/jn.115.225078

Abstract/Summary

Background: Accurate dietary assessment is key to understanding nutrition-related outcomes and is essential for estimating dietary change in nutrition-based interventions. Objective: The objective of this study was to assess the pan-European reproducibility of the Food4Me food-frequency questionnaire (FFQ) in assessing the habitual diet of adults. Methods: Participants from the Food4Me study, a 6-mo,Internet-based, randomized controlled trial of personalized nutrition conducted in the United Kingdom, Ireland, Spain, Netherlands, Germany, Greece, and Poland were included. Screening and baseline data (both collected before commencement of the intervention) were used in the present analyses, and participants were included only if they completed FFQs at screening and at baseline within a 1-mo timeframe before the commencement of the intervention. Sociodemographic (e.g., sex and country) and lifestyle[e.g.,bodymass index(BMI,inkg/m2)and physical activity] characteristics were collected. Linear regression, correlation coefficients, concordance (percentage) in quartile classification, and Bland-Altman plots for daily intakes were used to assess reproducibility. Results: In total, 567 participants (59% female), with a mean 6 SD age of 38.7 6 13.4 y and BMI of 25.4 6 4.8, completed both FFQs within 1 mo(mean 6 SD: 19.26 6.2d).Exact plus adjacent classification of total energy intake in participants was highest in Ireland (94%) and lowest in Poland (81%). Spearman correlation coefficients (r) in total energy intake between FFQs ranged from 0.50 for obese participants to 0.68 and 0.60 in normal-weight and overweight participants, respectively. Bland-Altman plots showed a mean difference between FFQs of 210 kcal/d, with the agreement deteriorating as energy intakes increased. There was little variation in reproducibility of total energy intakes between sex and age groups. Conclusions: The online Food4Me FFQ was shown to be reproducible across 7 European countries when administered within a 1-mo period to a large number of participants. The results support the utility of the online Food4Me FFQ as a reproducible tool across multiple European populations. This trial was registered at clinicaltrials.gov as NCT01530139.

Item Type:Article
Refereed:Yes
Divisions:Interdisciplinary centres and themes > Food Chain and Health
Faculty of Life Sciences > School of Agriculture, Policy and Development > Economic and Social Sciences Division > Food Economics and Marketing (FEM)
Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences > Human Nutrition Research Group
Faculty of Life Sciences > School of Psychology and Clinical Language Sciences > Nutrition and Health
ID Code:62842
Uncontrolled Keywords:food-frequency questionnaire, reproducibility, online, dietary intakes, European
Publisher:American Society for Nutrition

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