Chunk #27 — Methods — Extension to Multiple Phenotypes

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Environmental risk score as a new tool to examine multi-pollutants in epidemiologic research: an example from the NHANES study using serum lipid levels.

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The ERS consists of pollutants selected in the multivariate single- or multi-pollutant analyses. Its construction and assessment steps were the same as in Section 2. A schematic representation of the procedures is presented in Figure 1.