Mean values of haemoglobin and iron parameters based on blood lead concentrations
| Haemoglobin (g/dl) | Serum iron (μg/dl) | Serum ferritin (μg/l) | Blood lead (μg/dl) | |
|---|---|---|---|---|
| *p<0.01 versus ⩾10 μg/dl, computed by Mann-Whitney U test. | ||||
| †p<0.01, assessed by Spearman correlations. | ||||
| NA, not applicable. | ||||
| Blood lead concentrations | ||||
| <10 μg/dl (n=258) | 12.7 (1.2) | 67.8 (20.8)* | 30.3 (7.5)* | 4.2 (1.3)* |
| ⩾10 μg/dl (n=21) | 11.4 (0.8) | 25.4 (12.6) | 16.3 (9.2) | 12.4 (1.9) |
| Correlation coefficients (versus blood lead concentrations) | ||||
| Boys (n=145) | −0.11 | −0.25† | −0.23† | NA |
| Girls (n=134) | −0.08 | −0.22† | −0.19† | NA |