Why is this useful?
Environmental risks are not uniformly distributed across groups of people. Age, poverty, and minority status place some groups at a disproportionately high risk for environmental disease. Such groups are exposed to hazardous chemicals or conditions at levels well above those for the general populations.1,2 These exposures may be high-end exposures (> 95th or 99th percentile) to common agents or exposures the general population does not encounter. In traditional risk assessment and management, outliers are excluded or log-transformed; however, special attention should be paid to them.