Regional Variation in Human Exposure to Persistent Organic Pollutants in the United States, NHANES

<div>Geometric mean serum concentrations (in <i>µ</i>g/L) of PFCs by US Census region, NHANES 2003–2010. The error bars represent the 95% confidence interval. Within survey periods, regional means with the same letter superscript are not significantly different from each other based on analysis of covariance adjusting for age, smoking status, gender, and race/ethnicity.</div>

Journal of Environmental and Public Health

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Figure 2

Figure 2: Regional Variation in Human Exposure to Persistent Organic Pollutants in the United States, NHANES 