Applied quantile regression in environmental health

This week, Sheryl Magzamen and colleagues published a report of early life lead exposure and educational outcomes (exam scores) in Wisconsin school children that illustrates how quantile regression can reveal relationships masked by conditional means approaches. The greater effect of lead exposure on children in the
lower tail of exam scores is an example of how “In many cases there may not be one, unique slope that effectively characterizes the changes across the probability distribution.”

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