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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).