Table 1 Characteristics of study participants

Age in Years: Mean (sd)

49.3 (11.6)

49.7 (11.9)

48.9 (11.3)

1 or More Amalgams

73%

80%

67%

Mean Number of Amalgam Surfaces, inclusive of zero surfaces (sd)

12.8 (13.6)

14.4 (13.7)

11.4 (13.3)

Weight in kg: Mean (sd)

80.5 (17.4)

73.6 (16.8)

86.5 (15.6)

  Weight <74kg

40%

61%

22%

  Weight 74-90kg

33%

22%

41%

Urinary Hg (μg/g-creatinine): Mean (sd)

1.3 (1.8)

1.7 (2.3)

1.0 (1.2)

Urinary Challenge Hg (μg/g-creatinine): Mean (sd)

9.6 (12.9)

12.9 (15.1)

6.8 (9.9)