Table 3.

Results for the fully adjusted model relating log₁₀ blood mercury (dependent variable) and maternal characteristics using repeated-measures multivariable regression (n=81 mothers).

	Blood THg Exp (Beta) (95% CI)	Blood MeHg Exp (Beta) (95% CI)	Blood IHg1 Exp (Beta) (95% CI)
Time
Early gestation	(Referent)	(Referent)	(Referent)
Late gestation	0.98 (0.82, 1.2)	0.92 (0.78, 1.1)	1.1 (0.77, 1.6)
Maternal Age (years)	1.0 (0.97, 1.0)	1.0 (0.97, 1.0)	1.0 (0.96, 1.0)
Hematocrit (%)	1.0 (1.0, 1.1)	1.0 (0.98, 1.1)	1.0 (0.94, 1.1)
Race/ethnicity
African American	(Referent)	(Referent)	(Referent)
Caucasian	0.56 (0.36, 0.85)**	0.57 (0.35, 0.94)*	0.74 (0.44, 1.2)
Hispanic	0.87 (0.52, 1.5)	0.79 (0.42, 1.5)	1.2 (0.64, 2.3)
Previous alcohol consumption (yes)	2.2 (1.4, 3.3)***	2.1 (1.3, 3.4)**	2.1 (1.3, 3.4)**
Vitamin D supplementation (yes)	1.2 (0.82, 1.7)	0.99 (0.65, 1.5)	1.2 (0.81, 1.9)
IOM recommended weight gain
Inadequate	(Referent)	(Referent)	(Referent)
Adequate	0.73 (0.47, 1.1)	0.64 (0.38, 1.1)	0.85 (0.50, 1.5)
Excessive	0.65 (0.41, 1.0)	0.48 (0.28, 0.83)**	0.88 (0.51, 1.5)

^*p<0.05,

^**p<0.01,

^***p<0.001

CI (confidence interval), Exp (exponentiated), GW (gestational weeks), IHg (inorganic mercury), IOM (Institute of Medicine),²³ MeHg (methylmercury), THg (total mercury)

¹IHg (estimated) = THg - MeHg