Lead Environmental Pollution and Childhood Lead Poisoning at Ban Thi Commune, Bac Kan Province, Vietnam

Table 4

Children blood lead level among studied children (µg/dL).

Characteristic	n	Mean ± SD	Geo. Mean	(95% CI)	No. (%) >10 µg/dL
Age (years)
3-5	45	16.90 ± 6.74	15.69	14.88-18.93	39 (86.67)
6-10	113	15.31 ± 6.52	14.07	14.10-16.53	88 (79.28)
11-14	37	13.92 ± 5.58	12.95	12.06-15.78	28 (75.68)
p value		0.109			0.28
Sex
Boy	109	16.53 ± 5.95	15.49	15.39-17.66	94 (86.24)
Girl	86	14.01 ± 6.80	12.73	12.55-15.47	61 (70.93)
p value		0.006			0.009
Parent involvement in lead mining
No	109	16.51 ± 7.18	14.99	15.15-17.87	90 (82.57%)
Yes	86	14.03 ± 6.92	13.26	12.94-15.12	65 (75.58%)
p value		0.007			0.23