Table 2.
Blood lead levels in children in Ban Thi and Tan Long communes.
| BLLs (μg/dL) | Ban Thi, bac Kan1 (n = 195) | Tan long, Thai Nguyen2 (n = 208) | p value (1 vs. 2) | Total (n = 403) |
|---|---|---|---|---|
| <5 | 1 (0.5) | 45 (21.6) | <0.001∗ | 46 (11.4) |
| 5-<10 | 37 (19.0) | 55 (26.5) | 92 (22.8) | |
| ≥10–45 | 157 (80.5) | 104 (50.0) | 261 (64.7) | |
| >45 | 0 (0) | 4 (1.9) | 4 (1.0) | |
| Mean ± SD (95% CI) | 15.42 ± 6.45 (14.5-16.33) | 13.47 ± 11.48 (11.9–15.04) | <0.001∗∗ | 14.41 ± 9.42 (13.48–15.33) |
| Min-max | 4.97–37.99 | 0.1–61.49 | 0.1–61.49 |
∗Fisher exact test. ∗∗Mann–Whitney test.