Table 7.

Analyses of the relationship between 107-month IQ and alternative metrics based on 19 and 66 month recent postnatal hair Hg levels with and without THg by sex interaction.

	19 and 66 month data
	Hi/Low			AUC n =483	Brain Growth Weighting(using brain area) n =483
	6/6 cuts n =300	5/7 cuts n =193	4/8 cuts n =99
Variable	Coefficient (p-value)	Coefficient (p-value)	Coefficient (p-value)	Coefficient (p-value)	Coefficient (p-value)
Prenatal Mercury	−0.26 (0.053)	−0.18 (0.35)	−0.20 (0.42)	−0.19 (0.066)	−0.19 (0.074)
Postnatal Metric	−0.42 (0.75)	−0.44 (0.81)	---	−0.0001 (0.99)	---
Sex (male)	0.078 (0.95)	0.79 (0.62)	−4.27 (0.14)	0.17 (0.85)	−3.18 (0.085)
Postnatal Metric × Sex p-value	---	---	(0.012)	---	(0.039)
Postnatal Slope:
Male	---	---	8.95 (0.0091)	---	0.28 (0.22)
Female	---	---	−3.42 (0.37)	---	−0.36 (0.10)
Family status	0.66 (0.59)	0.71 (0.67)	4.45 (0.057)	0.058 (0.95)	0.019 (0.98)
HELPS	0.023 (0.74)	−0.0004 (0.90)	0.091 (0.42)	0.049 (0.36)	0.048 (0.37)
child med history	−0.098 (0.95)	0.90 (0.68)	0.035 (0.99)	−0.21(0.87)	−0.32 (0.80)
maternal age	0.21 (0.053)	0.15 (0.30)	0.60 (0.006)	0.17 (0.034)	0.18 (0.029)
HOME score	0.59 (< 0.001)	0.75 (< 0.001)	0.88 (0.002)	0.44 (<0.001)	0.44 (< 0.001)
Care giver IQ	0.13(0.006)	0.13 (0.048)	0.15 (0.082)	0.12 (<0.001)	0.12 (< 0.001)
SES	0.12 (0.066)	0.097 (0.24)	0.088 (0.44)	0.18 (<0.001)	0.18 (< 0.001)
Family Resource scale	0.029 (0.34)	0.052 (0.16)	0.035 (0.51)	0.018 (0.43)	0.016 (0.46)
Child age at testing	−0.55 (0.78)	0.57 (0.82)	3.62 (0.34)	−0.69 (0.65)	−0.44(.077)
Tester = 2	1.049 (0.41)	1.84 (0.27)	2.17 (0.37)	0.59 (0.55)	0.72 (0.46)
Tester = 3	1.79 (0.34)	3.76 (0.14)	1.11 (0.75)	0.91 (0.54)	1.13 (0.44)

SES = Socioeconomic status measured as the Hollingshead score at age 9 years

HOME = Home observation of

HELPS = Henderson early learning process scale