Table 6.

Mean difference in the proportion of urinary arsenicals associated with the proportion of plasma arsenicals.

	Mean Difference (95% CI) in %Urine Arsenicals
	%U-iAs	%U-MMAs	%U-DMAs
%P-iAs1	−0.8% (−1.9, 0.3)
%P-MMAs1		0.4% (−0.8, 1.7)
%P-DMAs1			1.6% (0.1, 3.1)
Sex
Males	0.0% (ref)	0.0% (ref)	0.0% (ref)
Females	0.6% (−2.9, 4.0)	1.3% (−0.7, 3.3)	−0.9% (−4.8, 3.0)
Age
< 18	0.0% (ref)	0.0% (ref)	0.0% (ref)
18 – 35	0.7% (−4.1, 5.5)	1.4% (−1.4,4.3)	−2.2% (−7.6, 3.3)
35 – 55	−1.2% (−6.2, 3.8)	0.2% (−2.7, 3.2)	0.2% (−5.4, 5.9)
≥ 55	−1.2% (−7.0, 4.6)	1.1% (−2.3, 4.5)	−1.8% (−8.4, 4.9)
BMI
Underweight	0.0% (ref)	0.0% (ref)	0.0% (ref)
Normal	0.5% (−4.8, 5.8)	−2.0% (−5.1, 1.2)	1.2% (−4.8, 7.1)
Overweight	2.9% (−3.4, 9.1)	−4.8% (−8.5, −1.2)	1.0% (−6.0, 8.0)
Obese	−0.8% (−7.1, 5.5)	−4.8% (−8.5, −1.1)	4.7% (−2.3, 11.8)
Smoking
No	0.0% (ref)	0.0% (ref)	0.0% (ref)
Yes	−1.5% (−6.8, 3.8)	−3.1% (−6.2, 0.0)	3.5% (−2.6, 9.6)
Seafood
Consumption
No	0.0% (ref)	0.0% (ref)	0.0% (ref)
Yes	−0.4% (−5.1, 4.3)	−3.3% (−6.1,−0.6)	2.1% (−3.2, 7.5)

¹mean difference in plasma arsenicals associated with a 10% increase in the proportion of plasma arsenical