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Eur J Clin Nutr. 2007 Jul;61(7):925-7. Epub 2007 Feb 14.

Imprecise methods may both obscure and aggravate a relation between fat and breast cancer.

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  • 1Research Unit for Dietary Studies, Institute of Preventive Medicine, Copenhagen, Denmark. BLH@ipm.hosp.dk

Abstract

Bias in diet reporting may be both random and non-random, and may be found with simpler as well as more advanced dietary instruments. A random bias will contribute to obscure relations between diet and disease. A systematic bias may obscure or aggravate such associations. Underreporting of non-protein energy has been found to be substantial, particularly among those who are obese or have high dietary intakes. Such a non-random bias on the group level would tend to aggravate associations between dietary non-protein and disease. Whether the net result of the random and non-random bias aggravates or obscures relations depends on the relative magnitude of the two.

PMID:
17299500
[PubMed - indexed for MEDLINE]
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