Table 3.

Comparison of mean blood lead level within age group.

Age group (Year)	Mean blood lead level (μg/dl)
	Occupationally exposed	Non-exposed
15–20	41.70±6.54*	11.40±2.45
21–30	45.65±6.90*	12.25±2.65
31–40	48.95±7.35*	12.60±3.50

^*Significantly different from control at p<0.05