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Effect of changes in a food frequency questionnaire: comparing data from two national dietary survey instruments among 12-month-old infants
BACKGROUND: National dietary surveys among Norwegian 12-months olds have been conducted twice: in 1999 and 2007. At both time-points diet were assessed by a semi-quantitative food frequency questionnaire (SFFQ) (the SFFQ-1999 and the SFFQ-2007). Modifications in the SFFQ-2007 compared to the SFFQ-19...
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| Auteurs principaux: | , , |
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| Format: | Artigo |
| Langue: | Inglês |
| Publié: |
BioMed Central
2013
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| Sujets: | |
| Accès en ligne: | https://ncbi.nlm.nih.gov/pmc/articles/PMC3724696/ https://ncbi.nlm.nih.gov/pubmed/23883290 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1186/1471-2458-13-680 |
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