Flexible matching strategies to increase power and efficiency to detect and estimate gene-environment interactions in case-control studies.

Abstract excerpt

Lack of power is a pertinent problem in many case-control studies of gene-environment interactions. The authors recently introduced the concept of flexible matching strategies with varying proportions of a matching factor among selected controls (degree of matching) to increase the power and efficiency of case-control studies. In this study, they extended the concept of flexible matching strategies to the field...

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