Figure 7

Groupwise coefficient matrices of area by karyotype. Groupwise comparisons of area by callosum region. The elements of each matrix contain the coefficient of Karyotype resulting from the multiple linear regression model Area _i = β₀ + β₁ Age _i + β₂ ICV _i + β₃ Karyotype _i + β _i . The coefficient is essentially the slope of the least squares line between the areas of the two karyotypes after adjusting for age and ICV. To clarify the direction of the effect, we print the name of the karyotype with the greatest area in the intersection. A circle is placed in intersections containing coefficients significant at the 0.05 level prior to correction for multiple comparisons while a triangle is present for coefficients significant after FDR correction.