The joint effect of an IQR increase in MBzP urinary concentration and African-American race/ethnicity resulted in a RR estimate that was 0.54 higher (bootstrap 95% CI on RERI: –0.07, 1.39) than the expected sum of the main effects estimated in the absence of interaction, although this additive interaction did not reach statistical significance.
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Prenatal exposure to butylbenzyl phthalate and early eczema in an urban cohort.
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