Table III.

Multivariate Analyses of Prenatal Smoking Effects

	ADHD-I	ADHD-Ia	Negative affect
	F-value	F-value	F-value	t-value
Prenatal smoking	2.65*	2.55	1.40
Race (Dummy 1) African American versus non-Hispanic White	14.41***	15.32***	1.81
Race (Dummy 2) Hispanic versus non-Hispanic White	1.76	1.84	2.27*
SES	2.98*	2.81*	.68
Life stress	2.52	–	1.27
Family conflict	6.08***	7.02***	2.08*
Maternal depression	6.83***	11.92***	1.97*
Maternal support-engagement	4.92**	4.92**	3.14**
Maternal hostility	10.23***	10.22***	2.10*
Maternal support-scaffolding skills	3.13*	3.06*	1.76
Attachment security	10.83*	11.10***	.20
Birth weight (grams)	.34	.33	.49

Note. ^aLife stress variable removed to test for suppression effects.

*p < .05; **p < .01; ***p < .001.