Table 4.

Partial correlations

Bk	A − C	A − C • Bk	A − C • BÎ!k	Shared %	Unique %
FLIP	0.33	0.29	0.24	24.5%	8.1%
MD	0.33	0.32	0.22	6.0%	0.4%
CT	0.33	0.24	0.28	44.7%	28.9%
All brain markers (B∈k)	0.33	0.22		55.0%

Correlations and partial correlations among age (A), source memory (C), and brain markers Bk, where BÎk is the set of all brain markers (E/R flip, MD, and CT) and BÎ!k is all brain markers excluding the kth marker. Shared % is the percentage of variance in the age–source memory relationship that is shared with the brain marker. Unique % is the percentage of variance in the age–source memory relationship that is uniquely accounted for when all other brain markers have been partialled out.