Neuropsychological Profile of Children in Relation to Dentine Lead Level and Socioeconomic Group

Lead exposure in children from 6 to 12 years old

“…Las concentraciones promedio de toda la población infantil de esta investigación son menores en En algunos estudios se ha señalado que, independientemente del nivel socioeconómico, [16][17][18] los niños se encuentran expuestos a diversas fuentes de plomo y a la consecuente intoxicación. Los niños que pertenecen a un nivel socioeconómico bajo (los de escuelas pú-blicas) se encuentran en mayor riesgo de tener altas concentraciones de plomo.…”

Developmental Neuropsychiatry

“…Behavioural ratings during testing by Hansen et al (1988) suggested impairment in the higher tooth-lead group.…”

“…All the studies to be cited find that the IQof the high-lead group is lower than that of the low-lead group by 2-11 points. Some find that the difference between groups is still significant when confounders are allowed for (Fergusson, Fergusson, Horwood & Kinzett, 1988;Hansen, Trillingsgaard, Beese, Lyngbye & Grandjean, 1988;Hatzakis ^/«/., 1988;Needleman ^/a/., 1979;Yule, Urbanowicz, Lansdown & Millar, 1984); others find that statistical significance disappears (Lansdown, Yule, Urbanowicz & Hunter, 1986;Smith, Delves, Lansdown, Clayton & Graham, 1983;Landrigan ^^ «/., 1975;McNeil & Ptasnik, 1975;Ratcliffe, 1977;Winneke, Hrdina & Brockhaus, 1982). I have reviewed these studies in more detail elsewhere, and could not account for the disparities on the basis of details of methodology (Taylor, in press).…”

Is There an Adverse Effect on the Intellectual Development of Children Exposed to Low Levels of Lead

“…Schroeder [29] has also drawn attention to the important effects of the quality of the care-giving environment in the home on both lead levels and IQ. In studies where the design and selected population allow these factors to be taken into account, there is some evidence of a greater effect of low-level lead exposure in children of lower SES [30,31], although not all investigators agree [25,32].…”