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200 children known to have high blood lead levels in the first 12 months of life were followed until their teenage years; 70 were subsequently diagnosed with below normal IQs. Another group of 200 children with normal blood lead levels in the first 12 months of life were followed similarly; 8 were subsequently diagnosed with below normal IQs. What is the attributable risk for low IQ for high lead exposure vs normal lead exposure? Low IQ Normal IQ Total high lead levels 70 130 200 normal lead levels 8 192 200 Totals 78 322 400 Group of answer choices 31 cases per 100 population attributable to lead 9 cases per 100 population attributable to lead 62 cases per 100 population attributable to lead 70 cases per 100 population attributable to lead
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HEALTH SCIENCE
NURSING

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