Table 4.

Phthalate metabolite concentration and odds of preschool ADHD by child sex, using augmented product term models, with sex-interaction products for phthalate and for maternal education.

			Adjusted for covariatesa			Adjusted for covariates and correlated phthalatesb
	Casesc		Boys	Girls		Boys	Girls
Phthalate	Boys	Girls	OR (95% CI)d	OR (95% CI)d	P e	OR (95% CI)d	OR (95% CI)d	P e
MEP	142	111	1.03 (0.89 to 1.19)	1.03 (0.88 to 1.21)	0.97
MiBP	142	111	1.17 (0.92 to 1.50)	0.97 (0.73 to 1.29)	0.33	0.98 (0.71 to 1.35)	1.00 (0.71 to 1.41)	0.93
MnBP	142	111	1.42 (1.07 to 1.88)	0.93 (0.68 to 1.28)	0.05	1.43 (0.97 to 2.10)	0.82 (0.51 to 1.31)	0.07
MBzP	142	111	1.20 (0.95 to 1.53)	1.06 (0.82 to 1.37)	0.47	1.01 (0.74 to 1.39)	1.17 (0.84 to 1.65)	0.53
∑DEHP	142	111	1.32 (1.00 to 1.74)	1.10 (0.78 to 1.55)	0.42	1.28 (0.95 to 1.73)	1.03 (0.70 to 1.51)	0.37
∑DiNP	142	111	1.22 (0.88 to 1.68)	1.17 (0.83 to 1.64)	0.86	1.10 (0.78 to 1.55)	1.15 (0.79 to 1.69)	0.85

^aAdjusted for specific gravity, analytic batch, child sex and maternal age, education, parity, depression during pregnancy, and maternal ADHD-like symptoms.

^bAdjusted for specific gravity, analytic batch, child sex and maternal age, education, parity, depression during pregnancy, maternal ADHD-like symptoms, and additionally adjusted for correlated metabolites (a) MiBP, MnBP, and MBzP coadjusted for one another; (b) ∑DEHP and ∑DiNP coadjusted for each other.

^cNumber with no missing exposure or covariates.

^dPer 1 natural log-unit increase in biomarker.

^eP for sex*phthalate interaction in linear regression models.