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Table 4 Partial Correlation of Lead and Achievement, Controlling for Income

From: Lead exposure and the 2010 achievement test scores of children in New York counties

Academic Outcome Partial Correlation Coefficient with Lead Burden p-value 95% Confidence Interval
ELA 3rd grade 0.29 0.031 (0.027, 0.51)
ELA 8th grade 0.32 0.016 (0.065, 0.54)
Math 3rd grade 0.38 0.004 (0.13, 0.58)
Math 8th grade 0.4 0.002 (0.15, 0.60)