Biochemical validation of a self-administered semi-quantitative food-frequency questionnaire

The British Journal of Nutrition
M PorriniF Fidanza

Abstract

The present study is a biochemical validation of a food-frequency questionnaire (FFQ) with optical reading, i.e. containing food portion photographs to help to assess quantities. Forty-four healthy subjects, non-smokers and not taking vitamin supplements, were recruited for the study. After completion of the questionnaire, subjects were asked to keep a 7 d weighed dietary record (7DR). Three 24 h urine samples were collected on 3 different days over the week of food recording for the analysis of urea-N, P and K. On the 4th day of food recording, blood was collected for determination of alpha-tocopherol, beta-carotene and ascorbic acid. N, P and K determined in urines and from 7DR were significantly correlated (Spearman rank correlation test), r values being 0.77, 0.57 and 0.42 respectively. The correlations with the FFQ were significant only for N (r 0.45) and P (r 0.39). Blood ascorbic acid and beta-carotene concentrations correlated with dietary intake when determined from 7DR (both r 0.44), but not when determined from FFQ. No correlation was found for alpha-tocopherol. The data obtained seem to prove the validity of the FFQ in defining eating patterns in terms of some nutrients, but not vitamins, at least as far as non-supp...Continue Reading

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Citations

Feb 11, 2000·Annals of the New York Academy of Sciences·A de LorenzoP Serranò
Mar 4, 2003·The Journal of Nutrition·Sheila A Bingham
Jun 1, 2004·Nutrition Research Reviews·J E CadeB M Margetts
Apr 30, 2003·The American Journal of Clinical Nutrition·Thomas RemerFriedrich Manz
Dec 1, 1998·Nutrition Research Reviews·J Macdiarmid, J Blundell
Jan 27, 2010·The British Journal of Nutrition·Patricia Henríquez-SánchezLluis Serra-Majem
Jun 15, 2017·Annual Review of Nutrition·Alex R Chang, Cheryl Anderson
Feb 7, 2003·Public Health Nutrition·Georg LietzAnnie S Anderson
Apr 2, 2015·International Journal of Food Sciences and Nutrition·Silvio BuscemiSalvatore Verga
Mar 1, 2000·Asia Pacific Journal of Clinical Nutrition·D LiM J Ball
Dec 4, 2012·Public Health Nutrition·Cecilia H Y SamPaula M L Skidmore
Jan 4, 2020·European Journal of Clinical Nutrition·Maddalena MassariIrene Cetin
Nov 9, 2011·Journal of Agricultural and Food Chemistry·Stefano VendrameMarisa Porrini
Mar 30, 2006·Journal of Agricultural and Food Chemistry·Patrizia RisoMarisa Porrini

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