Blood Lead Levels and Associated Sociodemographic Factors among Children Aged 3 to 14 Years Living near Zinc and Lead Mines in Two Provinces in Vietnam

Table 2

Blood lead levels in children in Ban Thi and Tan Long communes.

BLLs (μg/dL)	Ban Thi, bac Kan^1 ()	Tan long, Thai Nguyen^2 ()	value ^(1 vs. 2)	Total ()
<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)
(95% CI)	(14.5-16.33)	(11.9–15.04)	<0.001	(13.48–15.33)
Min-max	4.97–37.99	0.1–61.49		0.1–61.49

Fisher exact test. Mann–Whitney test.