Table 4.

Group effects on hippocampal volumes, accounting for age

Dependent variable	Independent variables	Coefficient	SE	p Value	Effect size
MCI vs CN
Left HV	Age	−257	70	0.001	N/A
	Dx	−774	541	0.16	0.5
Right HV	Age	−241	70	0.002	N/A
	Dx	−1,225	536	0.03	0.76
AD vs CN
Left HV	Age	−110	65	0.1	N/A
	Dx	−2,226	588	<0.001	−1.38
Right HV	Age	−87	72	0.23	N/A
	Dx	−2,094	651	0.003	−1.35
AD vs MCI
Left HV	Age	−101	93	0.29	N/A
	Dx	−1,506	695	0.04	−0.74
Right HV	Age	−125	112	0.27	N/A
	Dx	−748	837	0.38	−0.45

MCI = mild cognitive impairment; CN = cognitive normal; AD = Alzheimer disease; HV = hippocampal volume; Dx = diagnosis; N/A = not available.