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Table 1 Weighted medians and IQRs for metals concentrations in urine (per gram of creatinine) and blood, overall and stratified by race and ethnicity

From: Metal biomarker mixtures and blood pressure in the United States: cross-sectional findings from the 1999-2006 National Health and Nutrition Examination Survey (NHANES)

Median (IQR)

All Samples

Non-Hispanic White Adults

Mexican- American Adults

Non-Hispanic black Adults

Other

Urine (μg/g creatinine)

N = 2413

N = 1166

N = 535

N = 509

N = 203

Ba

1.33

(0.75, 2.31)

1.45

(0.84, 2.54)

0.99

(0.63, 2.00)

0.90

(0.43, 1.45)

1.33

(0.77, 2.32)

Cd

0.23

(0.13, 0.40)

0.23

(0.13, 0.40)

0.19

(0.12, 0.31)

0.23

(0.13, 0.41)

0.24

(0.16, 0.42)

Co

0.28

(0.19, 0.42)

0.29

(0.20, 0.42)

0.29

(0.20, 0.45)

0.23

(0.16, 0.37)

0.27

(0.20, 0.42)

Cs

4.24

(3.23, 5.67)

4.43

(3.44, 5.90)

4.12

(3.09, 5.22)

3.20

(2.48, 4.08)

4.19

(2.92, 6.00)

Mo

37.3

(25.4, 52.4)

37.6

(25.6, 52.3)

40.6

(29.9, 54.6)

31.7

(21.4, 44.9)

39.5

(25.1, 58.4)

Sb

0.10

(0.06, 0.15)

0.10

(0.06, 0.16)

0.09

(0.07, 0.14)

0.08

(0.06, 0.12)

0.09

(0.06, 0.14)

Tl

0.15

(0.11, 0.20)

0.15

(0.11, 0.21)

0.14

(0.11, 0.18)

0.12

(0.09, 0.17)

0.16

(0.11, 0.21)

W

0.06

(0.03, 0.11)

0.06

(0.04, 0.11)

0.07

(0.04, 0.11)

0.05

(0.03, 0.09)

0.06

(0.03, 0.11)

Blood

     

Pb (μg/dL)

1.5

(1, 2.2)

1.4

(1, 2.2)

1.7

(1, 2.7)

1.5

(1.1, 2.4)

1.6

(1, 2.3)

  1. IQR: Inter-quartile range, Ba: barium, Cd: cadmium, Co: cobalt, Cs: cesium, Mo: molybdenum, Pb: lead, Sb: antimony, Tl: thallium, and W: tungsten.
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Environmental Health

ISSN: 1476-069X