OBJECTIVE: The estimation of dietary intake in population-based studies is often assessed by the FFQ. The objective of our study is to evaluate the validity of an FFQ used to assess dietary fatty acid intake among middle-aged Chinese adults in Southern China. DESIGN: The method of triads was applied to obtain the validity coefficients (VC) of the FFQ for specific fatty acids. A subsample was randomly selected from an earlier cross-sectional study. The FFQ and 3d dietary records were used for dietary assessment, and the fatty acid composition of erythrocyte membranes was determined as the biomarker. RESULTS: The Spearman correlation coefficients between the FFQ and 3d dietary records were moderate to good (r = 0.28-0.66). The VC of the FFQ estimated by the method of triads were 0.72, 0.61, 0.65, 0.75 and 0.67 for MUFA, total n-6 fatty acids, alpha-linolenic acid, EPA and DHA, respectively. The VC could not be calculated for SFA, PUFA and total n-3 fatty acids because of negative correlations among the three measurements. But, the correlations between the FFQ and the dietary records were moderate for these fatty acids. CONCLUSIONS: Our FFQ applied in Southern Chinese adults was valid to estimate their dietary fatty acid intake and was thus suitable for use in a large cohort study.
OBJECTIVE: The estimation of dietary intake in population-based studies is often assessed by the FFQ. The objective of our study is to evaluate the validity of an FFQ used to assess dietary fatty acid intake among middle-aged Chinese adults in Southern China. DESIGN: The method of triads was applied to obtain the validity coefficients (VC) of the FFQ for specific fatty acids. A subsample was randomly selected from an earlier cross-sectional study. The FFQ and 3d dietary records were used for dietary assessment, and the fatty acid composition of erythrocyte membranes was determined as the biomarker. RESULTS: The Spearman correlation coefficients between the FFQ and 3d dietary records were moderate to good (r = 0.28-0.66). The VC of the FFQ estimated by the method of triads were 0.72, 0.61, 0.65, 0.75 and 0.67 for MUFA, total n-6 fatty acids, alpha-linolenic acid, EPA and DHA, respectively. The VC could not be calculated for SFA, PUFA and total n-3 fatty acids because of negative correlations among the three measurements. But, the correlations between the FFQ and the dietary records were moderate for these fatty acids. CONCLUSIONS: Our FFQ applied in Southern Chinese adults was valid to estimate their dietary fatty acid intake and was thus suitable for use in a large cohort study.
Authors: J Allaire; X Moreel; M-È Labonté; C Léger; A Caron; P Julien; B Lamarche; V Fradet Journal: Eur J Clin Nutr Date: 2015-03-11 Impact factor: 4.016
Authors: Sarah C Wallingford; Suzanne M Pilkington; Karen A Massey; Naser M I Al-Aasswad; Torukiri I Ibiebele; Maria Celia Hughes; Susan Bennett; Anna Nicolaou; Lesley E Rhodes; Adèle C Green Journal: Br J Nutr Date: 2012-05-23 Impact factor: 3.718
Authors: Markus Takkunen; Jyrki Agren; Johanna Kuusisto; Markku Laakso; Matti Uusitupa; Ursula Schwab Journal: Lipids Date: 2013-08-24 Impact factor: 1.880