TY - JOUR
T1 - Reproducibility of the online Food4Me food-frequency questionnaire for estimating dietary intakes across Europe
AU - Food4Me Study
AU - Marshall, Steven J.
AU - Livingstone, Katherine M.
AU - Celis-Morales, Carlos
AU - Forster, Hannah
AU - Fallaize, Rosalind
AU - O'Donovan, Clare B.
AU - Woolhead, Clara
AU - Marsaux, Cyril F.M.
AU - Macready, Anna L.
AU - Navas-Carretero, Santiago
AU - San-Cristobal, Rodrigo
AU - Kolossa, Silvia
AU - Tsirigoti, Lydia
AU - Lambrinou, Christina P.
AU - Moschonis, George
AU - Godlewska, Magdalena
AU - Surwiłło, Agnieszka
AU - Drevon, Christian A.
AU - Manios, Yannis
AU - Traczyk, Iwona
AU - Martínez, J. Alfredo
AU - Saris, Wim H.
AU - Daniel, Hannelore
AU - Gibney, Eileen R.
AU - Brennan, Lorraine
AU - Walsh, Marianne C.
AU - Lovegrove, Julie A.
AU - Gibney, Mike
AU - Mathers, John C.
N1 - Publisher Copyright:
© 2016 American Society for Nutrition.
PY - 2016/5/1
Y1 - 2016/5/1
N2 - 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 fromthe 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, 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±SD age of 38.7±13.4 y and BMI of 25.4±4.8, completed both FFQs within 1mo (mean6 SD: 19.2±6.2 d). Exact plus adjacent classification of total energy intake in participantswas 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.
AB - 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 fromthe 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, 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±SD age of 38.7±13.4 y and BMI of 25.4±4.8, completed both FFQs within 1mo (mean6 SD: 19.2±6.2 d). Exact plus adjacent classification of total energy intake in participantswas 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.
KW - Dietary intakes
KW - European
KW - Food-frequency questionnaire
KW - Online
KW - Reproducibility
UR - https://www.scopus.com/pages/publications/84978832745
U2 - 10.3945/jn.115.225078
DO - 10.3945/jn.115.225078
M3 - Article
C2 - 27052541
AN - SCOPUS:84978832745
SN - 0022-3166
VL - 146
SP - 1068
EP - 1075
JO - Journal of Nutrition
JF - Journal of Nutrition
IS - 5
ER -