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A Validation Study of an Interviewer-Administered Short Food Frequency Questionnaire in Assessing Dietary Vitamin D and Calcium Intake in Swedish Children
Umeå University, Faculty of Medicine, Department of Clinical Sciences, Paediatrics.
Umeå University, Faculty of Medicine, Department of Clinical Sciences, Paediatrics.
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2017 (English)In: Nutrients, ISSN 2072-6643, E-ISSN 2072-6643, Vol. 9, no 7, article id 682Article in journal (Refereed) Published
Abstract [en]

Vitamin D and calcium are essential nutrients with a range of biological effects of public health relevance. This study aimed to validate a short food frequency questionnaire (SFFQ) against a three-day food record (3D record), assessing the intake of vitamin D and calcium in Swedish children during wintertime. In a double-blinded, randomized food-based intervention study on the effect of feeding different daily doses of vitamin D supplement to 5-7-year-old children (n = 85), 79 (93%) participants completed SFFQ1 at baseline and SFFQ2 after the intervention, and 72 were informed to fill in a 3D record. The 28 (39%) children who completed the 3D record were included in this validation study. The baseline level of serum-25 hydroxy vitamin D [S-25(OH)D] was used as a biomarker. The correlation between all three instruments were moderate to strong. SFFQ2 and the 3D record correlated moderately to S-25(OH)D. Bland-Altman analysis showed that SFFQ2 overestimated vitamin D intake by on average 0.6 mu g/day, (limits of agreement (LOA) 5.7 and -4.6 mu g/day), whereas the intake of calcium was underestimated by on average 29 mg/day, (LOA 808 and -865 mg/day). Finally, the validity coefficient calculated for vitamin D using the method of triad was high (0.75). In conclusion, this SFFQ, assessed by a dietician, is a valid tool to assess dietary vitamin D and calcium intake in groups of young children.

Place, publisher, year, edition, pages
MDPI AG , 2017. Vol. 9, no 7, article id 682
Keywords [en]
dietary assessments, three-day food record, child, 25-hydroxy vitamin D
National Category
Nutrition and Dietetics
Identifiers
URN: urn:nbn:se:umu:diva-138608DOI: 10.3390/nu9070682ISI: 000406679700039OAI: oai:DiVA.org:umu-138608DiVA, id: diva2:1139211
Available from: 2017-09-07 Created: 2017-09-07 Last updated: 2018-06-09Bibliographically approved

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Lind, TorbjörnHernell, OlleÖhlund, Inger

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