Table 3.

Structural imaging data with age and sex as covariates. There were no differences between groups in normalized volume or cortical thickness in any region studied

	Region of Interest	Family	No Family	F	Significance
		History	History
		Mean	Mean
Normalized Volume	Left perirhinal cortex	0.0019	0.0020	0.769	0.52
(mm3 ROI/mm3 total)	Right perirhinal cortex	0.0015	0.0014	0.128	0.94
	Left entorhinal cortex	0.0013	0.00014	1.137	0.34
	Right entorhinal cortex	0.0014	0.0014	0.161	0.92
	Left hippocampus	0.0033	0.0034	1.641	0.19
	Right hippocampus	0.0033	0.0033	0.199	0.90
Cortical Thickness (mm)	Left perirhinal cortex	2.42	2.49	1.234	0.31
	Right perirhinal cortex	2.69	2.38	1.253	0.30
	Left entorhinal cortex	2.59	2.74	1.858	0.15
	Right entorhinal cortex	2.82	2.85	1.196	0.32