Table 2. Linear regression model results (a-priori measures).

Type of measure	Region	p-value
MRI-derived Volume	Hippocampus	0.019 (0.096)
	ERC	0.040 (0.100)
	PHC	0.752 (0.840)
	Precuneus	0.840 (0.840)
	PCC	0.220 (0.367)
MRI-derived Thickness	ERC	0.033 (0.132)
	PHC	0.296 (0.395)
	Precuneus	0.784 (0.784)
	PCC	0.173 (0.346)
FDG-PET regional mean	Posterior Cingulate	0.007 (0.020)
	L/R Angular	0.109 (0.152)
	L/R Temporal	0.152 (0.152)

P-values describing the significant associations of a-priori measures of interest with the conversion status variable from linear regression analyses. P-values in parentheses are corrected for multiple comparisons across all similar a-priori measures.