Table 1.
Characteristics between children with elevated blood lead levels and those with normal blood lead levels.
| Characteristic | Children with blood lead levels
|
χ2 | p-value | |
|---|---|---|---|---|
| < 10 μg/dL | ≥10 μg/dL | |||
| Age, mean ± SD | 9.10 ± 3.83 | 7.74 ± 2.81 | – | < 0.001a |
| ≤6 years | 58 (27.4%) | 41 (30.8%) | 27.85 | < 0.001 |
| 7–12 years | 115 (54.2%) | 92 (69.2%) | ||
| ≥13 years | 39 (18.4%) | 0 | ||
| Weight-for age z scores | –.51 ± 1.86 | –.63 ± 1.53 | – | 0.05b |
a.
Student t-test;
b.
Mann Whitney test; blood lead levels of ≥ 10 μg/dL are considered elevated levels.