Correlations between mercury concentrations and selected characteristics for women aged 16–49 years: United States, 1999–2000
| Characteristics | Original scale values | Log scale values | ||||
|---|---|---|---|---|---|---|
| Blood† R (p value) | Urine‡ R (p value) | Creatinine§ R (p value) | Blood R (p value) | Urine R (p value) | Creatinine R (p value) | |
| R: weighted Pearson correlation coefficients calculated in SAS. | ||||||
| Urine Hg and creatinine adjusted values, n = 1626. | ||||||
| Total Hg in blood, n = 1566. | ||||||
| *Derived “amalgam” surfaces. | ||||||
| †Total mercury in blood (μg/l). | ||||||
| ‡Urine mercury (μg/l). | ||||||
| §Creatinine corrected urine mercury (μg/g). | ||||||
| Age in years | 0.115 (<0.001) | 0.028 (0.267) | 0.166 (<0.001) | 0.216 (<0.001) | 0.038 (0.127) | 0.244 (<0.001) |
| Number of posterior surfaces | −0.018 (0.470) | 0.025 (0.321) | 0.057 (0.022) | 0.011 (0.645) | 0.085 (0.001) | 0.090 (0.001) |
| Number of restored surfaces | 0.036 (0.152) | 0.262 (<0.001) | 0.373 (<0.001) | 0.152 (<0.001) | 0.355 (<0.001) | 0.470 (<0.001) |
| Number of restored occlusal surfaces | 0.056 (0.028) | 0.317 (<0.001) | 0.450 (<0.001) | 0.161 (<0.001) | 0.436 (<0.001) | 0.582 (<0.001) |
| Number of amalgam posterior surfaces* | 0.027 (0.293) | 0.340 (<0.001) | 0.472 (<0.001) | 0.132 (<0.001) | 0.449 (<0.001) | 0.579 (<0.001) |
| Number of amalgam occlusal surfaces* | 0.050 (0.046) | 0.329 (<0.001) | 0.460 (<0.001) | 0.137 (<0.001) | 0.449 (<0.001) | 0.590 (<0.001) |
| Extent of amalgam surfaces* | 0.027 (0.294) | 0.321 (<0.001) | 0.436 (<0.001) | 0.132 (<0.001) | 0.422 (<0.001) | 0.546 (<0.001) |