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/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 (ρ) 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.
RCT Entities:
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/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 (ρ) in total energy intake between FFQs ranged from 0.50 for obeseparticipants 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.
Authors: Rodrigo San-Cristobal; Santiago Navas-Carretero; Carlos Celis-Morales; Katherine M Livingstone; Barbara Stewart-Knox; Audrey Rankin; Anna L Macready; Rosalind Fallaize; Clare B O'Donovan; Hannah Forster; Clara Woolhead; Marianne C Walsh; Christina P Lambrinou; George Moschonis; Yannis Manios; Miroslaw Jarosz; Hannelore Daniel; Eileen R Gibney; Lorraine Brennan; Thomas E Gundersen; Christian A Drevon; Mike Gibney; Cyril F M Marsaux; Wim H M Saris; Julie A Lovegrove; Lynn J Frewer; John C Mathers; J Alfredo Martinez Journal: Int J Behav Nutr Phys Act Date: 2017-12-11 Impact factor: 6.457
Authors: Julia Blaurock; Birgit Kaiser; Tamara Stelzl; Michelle Weech; Rosalind Fallaize; Rodrigo Zenun Franco; Faustina Hwang; Julie Lovegrove; Paul M Finglas; Kurt Gedrich Journal: Int J Environ Res Public Health Date: 2021-02-16 Impact factor: 3.390
Authors: Sharleen L O'Reilly; Christy Burden; Cristina Campoy; Fionnuala M McAuliffe; Helena Teede; Jesper Andresen; Karen J Campbell; Aisling A Geraghty; Cheryce L Harrison; Rachel Laws; Jane E Norman; Helle T Maindal; Karsten Vrangbæk; Ricardo Segurado; Vincent L Versace; Timothy C Skinner Journal: Trials Date: 2021-12-28 Impact factor: 2.279
Authors: Rodrigo San-Cristobal; Santiago Navas-Carretero; Katherine M Livingstone; Carlos Celis-Morales; Anna L Macready; Rosalind Fallaize; Clare B O'Donovan; Christina P Lambrinou; George Moschonis; Cyril F M Marsaux; Yannis Manios; Miroslaw Jarosz; Hannelore Daniel; Eileen R Gibney; Lorraine Brennan; Christian A Drevon; Thomas E Gundersen; Mike Gibney; Wim H M Saris; Julie A Lovegrove; Keith Grimaldi; Laurence D Parnell; Jildau Bouwman; Ben Van Ommen; John C Mathers; J Alfredo Martinez Journal: Nutrients Date: 2017-10-11 Impact factor: 5.717
Authors: Guiomar Masip; Anna Keski-Rahkonen; Kirsi H Pietiläinen; Urho M Kujala; Mirva Rottensteiner; Karoliina Väisänen; Jaakko Kaprio; Leonie H Bogl Journal: Nutrients Date: 2019-10-23 Impact factor: 5.717