TY - JOUR
T1 - Reproducibility of the Online Food4Me Food-Frequency Questionnaire for Estimating Dietary Intakes across Europe
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 - Surwillo, Agnieszka
AU - Drevon, Christian A.
AU - Manios, Yannis
AU - Traczyk, Iwona
AU - Martinez, 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.
PY - 2016/5
Y1 - 2016/5
N2 - 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/m(2)) 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 1 mo (mean +/- SD: 19.2 +/- 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 (p) 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 - 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/m(2)) 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 1 mo (mean +/- SD: 19.2 +/- 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 (p) 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 - food-frequency questionnaire
KW - reproducibility
KW - online
KW - dietary intakes
KW - European
U2 - 10.3945/jn.115.225078
DO - 10.3945/jn.115.225078
M3 - Article
C2 - 27052541
SN - 0022-3166
VL - 146
SP - 1068
EP - 1075
JO - Journal of Nutrition
JF - Journal of Nutrition
IS - 5
ER -