The relation between lead concentration in deciduous central upper incisor teeth and intellectual functioning was examined in 262 children who were followed from birth to age 7 years in the lead smelter town of Port Pirie, South Australia, and its environs.
Intellectual functioning of the children was assessed over the 3-year period from 1986 to 1989 with the revised Wechsler Intelligence Scale for Children (WISC-R) while each child was in his or her eighth year.
There was an inverse relation between tooth lead concentration and intellectual development ; the intelligence quotient declined by 2.6 points (90% confidence interval (CI) 0.13-4.9) for each natural-log unit increase in tooth lead concentration, expressed in parts per million.
Some WISC-R subscales were more strongly associated with lead exposure than others.
Mots-clés Pascal : Plomb, Métal lourd, Taux, Dent, Epidémiologie, Quotient intellectuel, Intelligence, Cognition, Enfant, Homme, Polluant, Environnement, Toxicité, Australie, Océanie, Sud, Développement intellectuel
Mots-clés Pascal anglais : Lead, Heavy metal, Rate, Tooth, Epidemiology, Intelligence quotient, Intelligence, Cognition, Child, Human, Pollutant, Environment, Toxicity, Australia, Oceania, South, Intellectual development
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 94-0684053
Code Inist : 002B03L05. Création : 09/06/1995.