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A Controlled Study

Robert Baloh, MD; Randall Sturm; Bonnie Green, MA; Goldine Gleser, PhD

Arch Neurol. 1975;32(5):326-330.

Abstract
Twenty-seven asymptomatic children with confirmed chronic increased lead absorption were compared with 27 matched control children for evidence of neuropsychological impairment. Evaluation of each child included a complete history, physical examination, quantitative neurological tests, and comprehensive psychological tests. There was significantly increased incidence of hyperactive behavior in the subjects with increased lead levels, but there was no significant difference in any of the quantitative test results. Uncontrolled variables, especially lead absorption in infancy and adverse environmental pressures other than lead, still leave questions about the relationship between chronic lead exposure and behavior or intelligence.

Author Affiliations
From the Department of Neurology, University of California, Los Angeles (Dr. Baloh), and the Department of Psychiatry, University of Cincinnati (Ms. Green and Dr. Gleser).

Footnotes
Accepted for publication Aug 5, 1974.

Reprint requests to Department of Neurology, Reed Neurological Research Center, Center for the Health Sciences, UCLA School of Medicine, Los Angeles, CA 90024 (Dr. Baloh).

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