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| Variables | Age | BPb | BHg | BCd |
|---|---|---|---|---|
| Age | 1 | 0.5025a | 0.4672a | 0.7795a |
| BPb | - | 1 | 0.3800a | 0.4961a |
| BHg | - | - | 1 | 0.4384a |
| BCd | - | - | - | 1 |
BPb = lead in whole blood, BHg = mercury in whole blood, BCd = cadmium in whole blood.
aP < 0.01, statistically highly significant.
