Nontraditional epidemiologic approaches in the analysis of gene-environment interaction: case-control studies with no controls!

Abstract excerpt

Although case-control studies are suitable for assessing gene-environment interactions, choosing appropriate control subjects is a valid concern in these studies. The authors review three nontraditional study designs that do not include a control group: 1) the case-only study, 2) the case-parental control study, and 3) the affected relative-pair method. In case-only studies, one can examine the association...

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