van Dongen, Martien C. J. M., Lentjes, Marleen A.H., Wijckmans, Nicole E.G., Dirckx, Carla, Lemaître, Dirk, Achten, Ward, Celis, Marleen, Sieri, Sabina, Arnout, Jef, Buntinx, Frank, Siani, Alfonso, Cappuccio, Francesco, Lorgeril, Michel de, Iacoviello, Licia and Dagnelie, Pieter C. (2011) Validation of a food-frequency questionnaire for Flemish and Italian-native subjects in Belgium : the IMMIDIET study. Nutrition, Volume 27 (Number 3). pp. 302-309. doi:10.1016/j.nut.2010.02.006 ISSN 08999007.

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Abstract

Objective: To validate an integrated food-frequency questionnaire (FFQ) developed to assess habitual food intake of Flemish and Italian-native subjects in Belgium as part of the European Collaborative Dietary Habit Profile in European Communities With Different Risk of Myocardial Infarction: the Impact of Migration as a Model of Gene/Environment Interaction (IMMIDIET Project).

Methods: The semiquantitative FFQ contained 322 items on food and food preparation. FFQs filled by a sample (n = 70) of the Flemish-Flemish and Flemish-Italian IMMIDIET subpopulations were randomly selected. Five 24-h recalls, administered over a period of 1 y by the same sample, served for validation. Energy and macronutrients were calculated using the Dutch NEVO and the Belgian NUBEL food composition tables. Intakes of energy and macronutrients estimated by the FFQ and repeated 24-h recall, respectively, were compared by means of correlation coefficients, classification into quartiles, and Bland-Altman plotting.

Results: The FFQ overestimated intake of energy and most macronutrients by 40-70%. This overestimation largely disappeared when values were expressed as energy percentage. Correlations ranked from 0.40 to 0.60 for energy and most macronutrients (median 0.53); correlations were lower (null to 0.41) for fat and higher (up to 0.90) for alcohol. Classification in quartiles of intake showed good agreement: 83% were classified in the same or adjacent quartile of energy, and 66-90% for macronutrients. Correlations and classification of macronutrient intake into quartiles remained similar when macronutrients were expressed as energy percentage. Stratification according to ethnic subgroup, age, body mass index, or social status showed no differences.

Conclusion: The IMMIDIET FFQ is a valuable tool for studies of the role of energy and macronutrients in disease etiology or outcome, but less suitable for estimating absolute intake levels. (C) 2011 Elsevier Inc. All rights reserved.

Item Type:	Journal Article
Subjects:	R Medicine > R Medicine (General)
Divisions:	Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Biomedical Sciences > Translational & Experimental Medicine > Metabolic and Vascular Health (- until July 2016) Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School
Library of Congress Subject Headings (LCSH):	Nutrition surveys -- Belgium, Food habits -- Belgium, Diet -- Statistics, Diet -- Research -- Mediterranean Region
Journal or Publication Title:	Nutrition
Publisher:	Elsevier Inc.
ISSN:	08999007
Official Date:	March 2011
Dates:	Date Event March 2011 Published
Volume:	Volume 27
Number:	Number 3
Page Range:	pp. 302-309
DOI:	10.1016/j.nut.2010.02.006
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Fifth Framework Programme (European Commission) (FP5)
Grant number:	QLRT-2000-00100 (FP5)

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