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. Author manuscript; available in PMC: 2020 Jun 15.
Published in final edited form as: Environ Res. 2019 Dec 2;182:108991. doi: 10.1016/j.envres.2019.108991

Fig. 4. Factor analysis path diagram of NHANES urinary metabolites of volatile organic compounds.

Fig. 4.

Factor analysis of creatinine normalized log transformed UM-VOCs. Loading estimates > 0.3 are indicated by the directed links from factors to variables. The double-headed links show correlations between factors. NHANES= National Health and Nutrition Examination Survey; UM-VOC = urinary metabolite of volatile organic compound.