American Journal of Epidemiology Vol. 128, No. 1: 197-205
Copyright © 1988 by The Johns Hopkins University School of Hygiene and Public Health
research-article |
PREDICTION OF CHILDREN'S BLOOD LEAD LEVELS ON THE BASIS OF HOUSEHOLD-SPECIFIC SOIL LEAD LEVELS
1Center for Environmental Health and Injury Control, Centers for Disease Control Atlanta, GA 30333
2The Biostatistics Center, The George Washington University Rockville, MD
Send reprint requests to Dr. Rebecca Schilling at this address
To help guide policy decisions about removing lead-contaminated soils, the authors estimated a regression model for predicting a child's blood lead level on the basis of his or her household-specific soil lead level. The data analyzed were blood lead levels (145 /µg/dl) and household-specific soil lead levels (5320,700 ppm) of 596 children aged 15 years who lived in the Helena Valley of Montana and the Silver Valley of Idaho during August 1983. A non-threshold, multiple linear regression model indicated that the estimated mean natural log transformed blood lead level increased by 0.231 µg/dl for each unit increase in natural log transformed soil lead level (ppm), after adjusting for the average number of daily outdoor play hours and whether someone in the household smoked. The model predicted that, at a soil lead level of 1,000 ppm, a child who does not play outside and who does not live in a household where someone smokes would be at low risk of lead toxicity (blood lead level between 4 and 24 µg/dl).
child; environmental exposure; lead; smoking; soil
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