Table 3: Frequency of blood leads level by distance from house and road with high traffic.

Variance

Number of children (%)

Values(arithmetic mean ± standard deviation)

Values (geometric mean)

< 100 m

57 (57)

92.38 ± 46.31

83.18

> 100 m

43 (43)

116.22 ± 42.89

108.99