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- Title
The relationship between blood lead, bone lead and child intelligence.
- Authors
Wasserman, Gail A; Factor-Litvak, Pam; Liu, Xinhua; Todd, Andrew C; Kline, Jennie K; Slavkovich, Vesna; Popovac, Dusan; Graziano, Joseph H
- Abstract
We report associations between serial measures of blood lead and intelligence in children age 10-12 years, half heavily exposed to lead from the prenatal period onward, and half relatively unexposed. For a subsample, we examine bone lead-IQ associations, comparing them with bone lead associations. Both blood and bone lead levels were associated with intelligence decrements, small relative to the contribution of social factors. For each doubling of Tib-Pb, Full Scale, Performance, and Verbal IQ decreased by an estimated 5.5, 6.2, and 4.1 points, respectively. Bone lead-IQ associations were stronger than those for blood lead, which nonetheless provide robust analogues. Current BPb, easy to obtain, provides a useful means for assessing Pb exposure/IQ associations.
- Publication
Child neuropsychology : a journal on normal and abnormal development in childhood and adolescence, 2003, Vol 9, Issue 1, p22
- ISSN
0929-7049
- Publication type
Journal Article
- DOI
10.1076/chin.9.1.22.14497