Figure 1
From: Susceptibility scoring in family-based association testing
Power Plot of power for the adjusted test versus the unadjusted test at varying genetic risk levels. The legend lists the odds of disease, given inheritance of the disease allele, for each risk cluster. Each of the nine covariate risk levels is represented within a single genetic risk cluster. There is a tendency for higher environmental risk to decrease the power within a genetic risk cluster (not shown).