Table 2b.

Regression Analysis Results for Behavioral Endpoints

Endpoint	Prenatal MeHg	P	Sex (Male)	p	Postnatal MeHg	p	SES	p	Mother’s IQ	p	Child’s IQ	p
Substance Use		0.02**
1	F 0.029	0.41	1.121	0.28	0.037	0.21	−0.010	0.45	0.005	0.63	0.017	0.16
	M −0.021	0.65
2	F 0.023	0.58	3.400	<0.01	0.012	0.72	−0.053	<0.01	−0.006	0.57	0.017	0.25
	M −0.141	0.01
3	F 0.016	0.79	4.234	<0.01	0.017	0.67	−0.023	0.23	0.008	0.55	−0.022	0.22
	M −0.129	0.03
4	F −0.170	0.16	2.169	0.21	0.001	0.98	−0.033	0.15	0.026	0.12	−0.009	0.67
	M −0.058	0.37
5 and 6	F −0.584	0.03	0.009	0.99	0.004	0.93	0.007	0.74	−0.027	0.10	−0.013	0.52
	M −0.031	0.56
Mental Health		0.02**
1	F 0.0014	0.97	0.359	0.67	0.006	0.82	−0.004	0.72	0.002	0.78	−0.023	0.05
	M −0.076	0.08
2	F −0.111	0.09	−5.845	<0.01	0.067	0.16	−0.002	0.93	−0.040	0.02	−0.070	<0.01
	M 0.116	0.12
Antisocial
1	−0.024	0.38	2.193	<0.01	−0.009	0.74	−0.014	0.25	0.014	0.14	−0.016	0.18
2	−0.092	0.07	3.688	<0.01	−0.026	0.55	−0.035	0.11	0.010	0.51	−0.058	0.01
3 and 4	0.082	0.23	7.908	<0.01	−0.104	0.14	0.033	0.41	−0.173	<0.01	−0.078	0.03
Injury
1	0.028	0.39	0.832	0.18	0.019	0.56	0.002	0.88	−0.010	0.41	−0.008	0.59
2	−0.028	0.58	3.326	<0.01	−0.056	0.27	0.003	0.89	−0.016	0.35	0.011	0.59
3 through 7	−0.109	0.23	6.398	<0.01	−0.115	0.18	0.020	0.69	−0.187	<0.01	−0.178	<0.01
Total Incidents/Year
1–3	0.079	0.06	−0.408	0.61	0.051	0.19	0.012	0.57	−0.012	0.41	−0.035	0.07
4–12	−0.006	0.90	1.594	0.04	0.015	0.71	0.033	0.10	−0.022	0.14	−0.036	0.06
≥ 13	−0.186	0.03	3.023	0.01	0.085	0.09	0.052	0.09	−0.048	0.02	−0.066	0.01
Total Referrals/Year
1–3	0.077	0.04	0.458	0.51	0.050	0.15	0.014	0.44	−0.012	0.37	−0.015	0.39
4–12	0.018	0.69	2.113	0.01	0.040	0.32	0.027	0.18	−0.042	0.01	−0.016	0.41
≥ 13	−0.090	0.15	2.075	0.03	0.045	0.33	0.009	0.72	−0.023	0.17	−0.050	0.02

^*Category 0 served as baseline for each endpoint. Negative estimates indicate improved behavior. Estimates with significance p ≤ 0.05 are bolded.

^**p value for MeHg × Sex interaction.