(03-06-12) Evaluation of food and nutrient intake assessment using concentration biomarkers in European adolescents from the Healthy Lifestyle

Evaluation of food and nutrient intake assessment using concentration biomarkers in European adolescents from the Healthy Lifestyle in Europe by Nutrition in Adolescence study.
Vandevijvere S, Geelen A, Gonzalez-Gross M, Van't Veer P, Dallongeville J,
Mouratidou T, Dekkers A, B?rnhorst C, Breidenassel C, Crispim SP, Moreno LA,
Cuenca-Garc?a M, Vyncke K, Beghin L, Grammatikaki E, De Henauw S, Catasta G,
Hallstr?m L, Sj?str?m M, W?rnberg J, Esperanza L, Slimani N, Manios Y, Moln?r
D, Gilbert CC, Kafatos A, Stehle P, Huybrechts I.
Source
Scientific Institute of Public Health, J. Wytsmanstraat 14, 1050, Brussels,
Belgium.
Abstract
Accurate food and nutrient intake assessment is essential for investigating
diet-disease relationships. In the present study, food and nutrient intake
assessment among European adolescents using 24 h recalls (mean of two recalls)
and a FFQ (separately and the combination of both) were evaluated using
concentration biomarkers. Biomarkers included were vitamin C, β-carotene,
DHA+EPA, vitamin B12 (cobalamin and holo-transcobalamin) and folate
(erythrocyte folate and plasma folate). For the evaluation of the food intake
assessment 390 adolescents were included, while 697 were included for the
nutrient intake assessment evaluation. Spearman rank and Pearson correlations,
and validity coefficients, which are correlations between intake estimated and
habitual true intake, were calculated. Correlations were higher between
frequency of food consumption (from the FFQ) and concentration biomarkers than
between mean food intake (from the recalls) and concentration biomarkers,
especially for DHA+EPA (r 0?35 v. r 0?27). Most correlations were higher among
girls than boys. For boys, the highest validity coefficients were found for
frequency of fruit consumption (0?88) and for DHA+EPA biomarker (0?71). In
girls, the highest validity coefficients were found for fruit consumption
frequency (0?76), vegetable consumption frequency (0?74), mean fruit intake
(0?90) and DHA+EPA biomarker (0?69). After exclusion of underreporters,
correlations slightly improved. Correlations between usual food intakes,
adjusted for food consumption frequency, and concentration biomarkers were
higher than correlations between mean food intakes and concentration
biomarkers. In conclusion, two non-consecutive 24 h recalls in combination with
a FFQ seem to be appropriate to rank subjects according to their usual food
intake.

Source: Br J Nutr. 2012 May 23:1-12. [Epub ahead of print]

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