Figure 3From: Neurobehavioral function and low-level exposure to brominated flame retardants in adolescents: a cross-sectional study Estimated effects of the serum levels of brominated flame retardants on the performance in the Continuous Performance from analysis with stratification by period. For each exposure indicator, the effect on outcome in the first, the second, the third and the fourth block is shown. Each block consisted of 12 trials. The same modeling strategy as in the analysis without stratification was applied.Back to article page