Table 2.

Multilevel linear model of total hippocampus volume by preschool and school-age maternal support (n = 127)

	Estimate, cm3	SE	t	P
Intercept	7.9360	0.0957	82.93	<0.0001
Age	0.1024	0.0528	1.94	0.0546
Age-squared	0.0202	0.0469	0.43	0.6676
Gender, male 1, female 0	0.0568	0.1159	0.49	0.6250
Income-to-needs ratio	0.0285	0.0740	0.39	0.7007
IQ score	0.0070	0.0043	1.63	0.1059
Total gray matter volume*	0.0053	0.0007	7.61	<0.0001
Time†	0.0809	0.0106	7.65	<0.0001
Preschool maternal support	0.0058	0.0078	0.74	0.4629
School-age maternal support	0.0059	0.0084	0.70	0.4846
Preschool maternal support × time	0.0035	0.0012	2.83	0.0059
School-age maternal support × time	−0.0001	0.0011	−0.10	0.9228

^*Total hippocampus volume was subtracted from total gray matter volume.

^†Time indicates scan number.