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Table 3 Selected percentiles, mean, number and percentage of people with urinary mercury concentrations above 5 μg Hg/g Cr

From: Dental amalgam and urinary mercury concentrations: a descriptive study

Characteristic

6-79 Years

6-11 Years

12-19 Years

20-39 Years

40-59 Years

60-79 Years

Women 16-49 Years

AMALGAM FREE

95 th Percentile

0.89E

0.66

0.77E

0.85E

_

0.82E

_

95% CI

(0.46 - 1.32)

(0.46 - 0.86)

(0.44 - 1.09)

(0.28 -1.42)

(0.28 -1.36)

99 th Percentile

2.29E

1.35

1.66

_

2.84E

2.09E

_

95% CI

(1.06 - 3.51)

(0.91 - 1.78)

(1.10 - 2.22)

(1.04 - 4.63)

(1.18 - 2.99)

99.9 th Percentile

_

2.39E

_

_

3.32E

_

_

95% CI

(1.35 - 3.44)

(2.1 - 4.55)

mumc

0.12

0.12

0.09

0.13

0.15E

0.14

0.16E

95% CI

(0.10 - 0.16)

(0.10 - 0.14)

(0.07 - 0.11)

(0.10 -0.18)

(0.10 - 0.22)

(0.10 - 0.18)

(0.11 - 0.24)

OVERALL

95 th Percentile

2.57

2.02

2.32

1.93

3.04

2.77

2.67

95% CI

(2.16 -2.97)

(1.33 - 2.7)

(1.52 - 3.11)

(1.56 -2.3)

(2.35 -3.73)

(2.15 -3.38)

(1.88 - 3.46)

99 th Percentile

5.65

5.2E

4.64E

4.64E

5.9E

7.34

6.26E

95% CI

(3.66 - 7.63)

(2.36 - 8.04)

(2.81 - 6.47)

(2.55 - 6.72)

(3.72- 8.07)

(5.17- 9.52)

(3.83- 8.69)

99.9 th Percentile

12.14

10.04

_

12.56E

11.59

_

12.87E

95% CI

(10.03– 14.25)

(7.00 - 13.08)

(5.65 - 19.48)

(8.77 - 14.42)

(6.7 - 19.03)

mumc

0.26

0.18

0.13

0.22

0.40

0.31

0.31

95% CI

(0.23 - 0.30)

(0.15 - 0.22)

(0.11 - 0.15)

(0.19 - 0.25)

(0.33 - 0.48)

(0.24 - 0.41)

(0.27 - 0.36)

Number above

71

15

3

10

28

15

19

5 μg Hg/g Cr

% above

<2.32

<2.64

_

<1.77

<4.58

<2.88

<4.74

5 μg Hg/g Cr

       
  1. Estimates representative for the Canadian general population (based on weighted data).