Table 3.

Hippocampal volumes by genotype as a percentage of total Intracranial Volume (ICV). Correlations (Pearson’s r and associated p value) between volumes and proportion of ‘Old’ words correctly identified in the recognition phase.

	Left Hippocampus		Right Hippocampus
	Volume (%ICV), s.d.	Correlation with %remembered	Volume (%ICV), s.d.	Correlation with %remembered
e4− (n = 16)	0.215 ± 0.0145	r = 0.547 (p = 0.023)	0.2183 ± 0.0142	r = 0.208 (p = 0.422)
e4+ (n = 16)	0.2219 ± 0.0201	r = −0.079 (p = 0.771)	0.2299 ± 0.0229	r = −0.169 (p = 0.531)