Table 2.

Geometric mean blood Pb and hematocrit-corrected blood Pb levels by age group and sex in the United States.

		Geometric mean blood Pb level ($\mathrm{\mu }\mathrm{g}/\text{dL}$)		Hematocrit-corrected geometric mean blood Pb level ($\mathrm{\mu }\mathrm{g}/\text{dL}$)
Age group (y)	Sex	1999–2000 (SE)	2013–2014 (SE)	1999–2000 (SE)	2013–2014 (SE)
40–49	Male	2.37 (0.11)	1.11 (0.06)	2.22 (0.09)	1.04 (0.06)
	Female	1.38 (0.06)	0.77 (0.03)	1.48 (0.06)	0.82 (0.03)
50–59	Male	2.55 (0.12)	1.33 (0.08)	2.41 (0.11)	1.28 (0.08)
	Female	1.76 (0.05)	1.04 (0.04)	1.85 (0.06)	1.08 (0.04)
60–69	Male	2.80 (0.08)	1.40 (0.12)	2.67 (0.07)	1.34 (0.12)
	Female	1.92 (0.10)	1.24 (0.06)	2.01 (0.11)	1.29 (0.06)
70–80	Male	2.83 (0.11)	1.72 (0.15)	2.77 (0.11)	1.70 (0.14)
	Female	2.04 (0.08)	1.32 (0.06)	2.16 (0.09)	1.38 (0.07)

Source: CDC 2002a, 2002b, 2002c, 2015, 2016a, 2016b. Note: Pb, lead; SE, standard error.