Table 2.

Regression model summary

Regression Model	BAC NC, n = 20	BAC NC, n = 18	ADNI NC	ADNI PIB+ MCI
aHV = PIB	ΔR2 = 0.45, P = 0.0016	ΔR2 = 0.28, P = 0.026	ΔR2 = 0.22, P = 0.047	ΔR2 = 0.27, P = 0.00070
EM = PIB	ΔR2 = 0.35 P = 0.0086	ΔR2 = 0.03, P = 0.47	ΔR2 = 0.02, P = 0.60	ΔR2 = 0.11, P = 0.046

Regression models were conducted twice within the BAC NC group. The first analysis used the entire BAC NC sample (n = 20) whereas the second analysis was conducted after removing the two subjects with the highest PIB index (n = 18). Significant models are in bold. A consistent relationship between aHV and PIB index is observed in each group examined.