Reproducibility and validity of a food frequency questionnaire among pregnant women in a Mediterranean area
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Altres documents de l'autoria: Vioque, Jesus; Navarrete-Muñoz, Eva María; Giménez Monzó, Daniel; Garcia de la Hera, Manuela; Granado, Fernando; Young, Ian S.; Ramón, Rosa; Ballester, Ferran; Murcia, Mario; Rebagliato, Marisa; Iñiguez, Carmen; INMA-Valencia Cohort Study
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Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/36080
comunitat-uji-handle3:10234/36082
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Reproducibility and validity of a food frequency questionnaire among pregnant women in a Mediterranean areaAutoria
Data de publicació
2013Editor
BioMed CentralISSN
1475-2891Cita bibliogràfica
Vioque et al.: Reproducibility and validity of a food frequency questionnaire among pregnant women in a Mediterranean area. Nutrition Journal 2013 12:26.Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://www.nutritionj.com/content/pdf/1475-2891-12-26.pdfVersió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
Background: Studies exploring the role of diet during pregnancy are still scarce, in part due to the complexity of
measuring diet and to the lack of valid instruments. The aim of this study was to examine the repro ... [+]
Background: Studies exploring the role of diet during pregnancy are still scarce, in part due to the complexity of
measuring diet and to the lack of valid instruments. The aim of this study was to examine the reproducibility and
validity (against biochemical biomarkers) of a semi-quantitative food frequency questionnaire (FFQ) in pregnant women.
Methods: Participants were 740 pregnant women from a population-based birth cohort study in Valencia (INMA Study).
We compared nutrient and food intakes from FFQs estimated for two periods of pregnancy (reproducibility), and
compared energy-adjusted intake of several carotenoids, folate, vitamin B12, vitamin C and α-tocopherol of the FFQ in
the first trimester with their concentration in blood specimens (validity).
Results: Significant correlations for reproducibility were found for major food groups and nutrients but not for
lycopene (r=0.06); the average correlation coefficients for daily intake were 0.51 for food groups and 0.61 for nutrients.
For validity, statistically significant correlations were observed for vitamin C (0.18), α-carotene (0.32), β-carotene (0.22),
lutein-zeaxantin (0.29) and β-cryptoxantin(0.26); non-significant correlations were observed for retinol, lycopene,
α-tocopherol, vitamin B12 and folate (r≤0.12). When dietary supplement use was considered, correlations were
substantially improved for folate (0.53) and to a lesser extent for vitamin B12 (0.12) and vitamin C (0.20).
Conclusion: This study supports that the FFQ has a good reproducibility for nutrient and food intake, and can
provide a valid estimate of several important nutrients during pregnancy [-]
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Nutrition Journal, 2013, Vol. 12, Art. No. 26Drets d'accés
info:eu-repo/semantics/openAccess
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Except where otherwise noted, this item's license is described as © 2013 Vioque et al.; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative
Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and
reproduction in any medium, provided the original work is properly cited.