Table 2.

Covariate-adjusted associations between mixtures and ABC Hyperactivity subscale and two subdomain scores among all children and children with ASD.

Outcome	Mixture	All (n = 574)			ASD (n = 232)
		Mean IRRa	2.5 PCT	97.5 PCT	Mean IRRb	2.5 PCT	97.5 PCT
Hyperactivity subscale	Phenols/parabens	0.92	0.79	1.04	1.12	0.97	1.29
	Phthalate metabolites	1.11	1.00	1.23	1.14	1.06	1.26
	Pesticide metabolites	1.03	0.95	1.11	0.95	0.89	1.03
	Trace elements	0.99	0.90	1.10	1.02	0.91	1.13
	Total mixture	1.04	0.87	1.18	1.15	1.03	1.29
Hyperactivity/impulsivity subdomain	Phenols/parabens	0.91	0.77	1.06	1.08	0.94	1.25
	Phthalate metabolites	1.13	1.02	1.27	1.20	1.09	1.32
	Pesticide metabolites	1.02	0.94	1.14	0.97	0.89	1.04
	Trace elements	1.01	0.89	1.15	1.05	0.93	1.22
	Total mixture	1.07	0.93	1.20	1.21	1.05	1.43
Inattention subdomain	Phenols/parabens	0.93	0.81	1.05	1.13	1.00	1.28
	Phthalate metabolites	1.05	0.98	1.12	1.08	1.01	1.17
	Pesticide metabolites	0.99	0.93	1.05	0.97	0.91	1.03
	Trace elements	0.98	0.88	1.08	0.99	0.90	1.09
	Total mixture	0.99	0.88	1.10	1.11	1.01	1.25

^aWQS regression models were adjusted for child’s sex, birth year, and age at assessment, parity, parental education, maternal metabolic conditions, and diagnosis.

^bWQS regression models were adjusted for child’s sex, birth year, and age at assessment, parity, parental education, and maternal metabolic conditions.