16 Environmental Health: Indoor Exposures, Assessments and Interventions
DISCUSSION
We found the GM PbB for children 12–60 months of age in the United States between
1999 and 2004 was 2 μg/dL and that 20 children per 1,000 had PbB ≥ 10 μg/dL. A prior
study analyzing NHANES data collected 1994–1998 found that 63 children per 1,000
had PbB ≥ 10 μg/dL [33]. Our findings show that 81 children per thousand had PbB ≥
5 μg/dL. Although there is a clear and significant decline over time in childhood lead
exposure demonstrated by these prevalence estimates from NHANES, there is still an
unacceptable number of children who are poisoned each year.
Age, race/ethnicity, PIR, and year of construction of housing all signifi cantly pre-
dicted PbB of children, ...