Table 3.

ORs (95% CIs) from logistic regression for associations between “at risk” scores for ADHD-related BASC-2 subscales^a and high versus low ECAT exposure during the first year of life,^b stratified by maternal education high school or less vs. more than high school.

BASC-2 scale	Lower maternal educationn=119				Higher maternal educationn=439
	nc	Unadjusted [OR (95% CI)]	Adjustedd [OR (95% CI)]	p-Value	nc	Unadjusted [OR (95% CI)]	Adjustedd [OR (95% CI)]	p-Value
Hyperactivity	18	0.9 (0.4, 1.9)	0.9 (0.4, 2.2)	0.83	29	2.4 (1.4, 4.1)*	2.3 (1.3, 4.1)*	0.003
Attention Problems	20	0.8 (0.4, 1.7)	0.8 (0.3, 1.8)	0.97	21	1.4 (0.8, 2.4)	1.3 (0.7, 2.4)	0.40
Aggression	13	0.7 (0.3, 1.7)	0.6 (0.2, 1.7)	0.34	24	1.9 (1.1, 3.4)*	1.5 (0.8, 2.8)	0.16
Conduct Problems	17	1.3 (0.6, 2.9)	1.1 (0.4, 2.8)	0.88	21	2.2 (1.2, 3.9)*	1.7 (0.9, 3.2)	0.14
Atypicality	18	1.4 (0.6, 3.2)	1.6 (0.6, 4.1)	0.31	17	1.7 (0.9, 3.2)	1.4 (0.7, 2.8)	0.30
aBASC-2T-score >59.bECAT ≥40 µg/m3 vs. <0.40 µg/m3.cNumber with “at risk”T-score and high ECAT.dAdjusted for sex, and age 1year cigarette exposure. *p <0.05.