Test-retest reproducibility of a food frequency questionnaire (FFQ) and estimated effects on disease risk in the Norwegian Women and Cancer Study (NOWAC)

BACKGROUND: The Norwegian Women and Cancer Study (NOWAC) is a national population-based cohort study with 102 443 women enrolled at age 30–70 y from 1991 to 1997. The present study was a methodological sub-study to assess the test-retest reproducibility of the NOWAC food frequency questionnaire (FFQ...

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Main Authors: Parr, Christine L, Veierød, Marit B, Laake, Petter, Lund, Eiliv, Hjartåker, Anette
Format: Artigo
Sprog:Inglês
Udgivet: BioMed Central 2006
Fag:
Research
Online adgang:https://ncbi.nlm.nih.gov/pmc/articles/PMC1434764/
https://ncbi.nlm.nih.gov/pubmed/16448553
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1186/1475-2891-5-4
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