Table 3 Dose–response association of blood metal concentrations with the risk of developmental delays in children.
From: Association of blood heavy metals with developmental delays and health status in children
Variables | Children with developmental delays (n = 89) | Children with typical development (n = 89) | Multivariate ORs (95% CI)a |
|---|---|---|---|
Lead (μg/dL) | 7.50 ± 0.85 | 3.57 ± 0.22 | 1.54 (1.30–1.83)** |
<5.00 | 34 (38.20) | 79 (88.76) | 1.00§ |
5.00–10.00 | 39 (43.82) | 8 (8.99) | 11.43 (4.69–27.86)** |
≥10.00 | 16 (17.98) | 2 (2.25) | 14.46 (3.01–69.58)** |
Mercury (μg/L) | 6.83 ± 0.68 | 9.58 ± 2.36 | 0.98 (0.94–1.03) |
<5.80 | 50 (56.18) | 39 (43.82) | 1.00 |
≥5.80 | 39 (43.82) | 50 (56.18) | 0.55 (0.29–1.03) |
Cadmium (μg/L) | 1.19 ± 0.09 | 1.34 ± 0.16 | 0.89 (0.69–1.13) |
≤0.60 | 20 (22.47) | 30 (33.71) | 1.00 |
0.60–1.00 | 29 (32.58) | 31 (34.83) | 1.82 (0.81–4.08) |
>1.00 | 40 (44.94) | 28 (31.46) | 2.24 (1.01–5.01)* |
