Table 3.

Relation of control variables to mean cortical thickness in 3 regions of interest (N= 78)

ROI	Occipitotemporal	Parietal	Occipital
Age of child	−0.03	0.02	−0.04
Sex of child	0.16††	−0.13	0.17††
Mother's age at delivery	−0.12	−0.06	−0.12
Maternal education	0.34**	0.15††	0.14
Socioeconomic statusa	0.30**	0.27*	0.16††
Cigarettes/day during pregnancy	−0.11	−0.15††	−0.21†

^aBased on Hollingshead Scale (2011).

^††P < 0.20; ^†P < 0.10; *P < 0.05, **P < 0.01.