The potential value of sibling controls compared with population controls for association studies of lifestyle-related risk factors: an example from the Breast Cancer Family Registry.

Abstract

BACKGROUND A previous Australian population-based breast cancer case-control study found indirect evidence that control participation, although high, was not random. We hypothesized that unaffected sisters may provide a more appropriate comparison group than unrelated population controls. METHODS Three population-based case-control-family studies of… (More)
DOI: 10.1093/ije/dyr110

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