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Relative validation of a food frequency questionnaire for national health and nutrition monitoring
BACKGROUND: Validation of a food frequency questionnaire (FFQ) is important as incorrect information may lead to biased associations. Therefore the relative validity of an FFQ developed for use in the German Health Examination Survey for Adults 2008-2011 (DEGS) was examined. METHODS: Cross-sectional...
Autores principales: | , , , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2010
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2945984/ https://www.ncbi.nlm.nih.gov/pubmed/20840739 http://dx.doi.org/10.1186/1475-2891-9-36 |