Record Display for the EPA National Library Catalog


Main Title Blood Lead, Hearing Thresholds, and Neurobehavioral Development in Children and Youth (Journal Version).
Author Schwartz, J. ; Otto, D. ;
CORP Author Health Effects Research Lab., Research Triangle Park, NC.
Publisher 1987
Year Published 1987
Report Number EPA/600/J-87/434;
Stock Number PB89-106009
Additional Subjects Hearing ; Youths ; Children ; Lead ; Hyperkinesis ; Exposure ; Blood analysis ; Public health ; United States ; Health survey ; Health statistics ; Toxicity ; Tables(Data) ; Developmental disabilities ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB89-106009 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 11p
NHANES II audiometry data were used to confirm a previously observed link between blood lead (PbB) level and hearing threshold. Other indicators of neurological development, such as age at which a child first sat up, walked, and spoke, and the presence of speech difficulties and hyperactivity were also examined to determine if they were significantly related to lead exposure. The probability of elevated hearing thresholds at 500, 1000, 2000 and 4000 Hz increased significantly (P<0.0001) with increasing PbB for both ears. PbB levels were also significantly related to delays in the age at which children first sat up, walked, and spoke and to the probability that a child was hyperactive. Lead was not related to the probability of a child having a previously diagnosed speech impairment.