Reproducibility of the Online Food4Me Food-Frequency Questionnaire for Estimating Dietary Intakes across Europe

MARSHALL, Steven J., LIVINGSTONE, Katherine M., CELIS-MORALES, Carlos, FORSTER, Hannah, FALLAIZE, Rosalind, O'DONOVAN, Clare B., WOOLHEAD, Clara, MARSAUX, Cyril F.M., MACREADY, Anna L., NAVAS-CARRETERO, Santiago, SAN-CRISTOBAL, Rodrigo, KOLOSSA, Silvia, TSIRIGOTI, Lydia, LAMBRINOU, Christina P., MOSCHONIS, George, GODLEWSKA, Magdalena, SURWIŁŁO, Agnieszka, DREVON, Christian A., MANIOS, Yannis, TRACZYK, Iwona, MARTÍNEZ, J. Alfredo, SARIS, Wim H., DANIEL, Hannelore, GIBNEY, Eileen R., BRENNAN, Lorraine, WALSH, Marianne C., LOVEGROVE, Julie A., GIBNEY, Mike and MATHERS, John C. (2016). Reproducibility of the Online Food4Me Food-Frequency Questionnaire for Estimating Dietary Intakes across Europe. The Journal of Nutrition, 146 (5), 1068-1075.

Marshall_ReproducibilityOnlineFood4Me(AM).pdf - Accepted Version
All rights reserved.

Download (853kB) | Preview
Official URL:
Link to published version::


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., body mass index (BMI, in kg/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: 19.2 6 6.2 d). 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

Item Type: Article
Uncontrolled Keywords: Nutrition & Dietetics; 1111 Nutrition and Dietetics; 0702 Animal Production; 0908 Food Sciences
Identification Number:
Page Range: 1068-1075
SWORD Depositor: Symplectic Elements
Depositing User: Symplectic Elements
Date Deposited: 19 Aug 2020 15:43
Last Modified: 17 Mar 2021 23:36

Actions (login required)

View Item View Item


Downloads per month over past year

View more statistics