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. Author manuscript; available in PMC: 2019 Feb 1.
Published in final edited form as: Environ Res. 2018 Feb;161:472–478. doi: 10.1016/j.envres.2017.11.046

Table 3.

Impact of Gut Microbial Taxa on the Relationship Between Prior Year Exposure to Freeway Traffic-Related Air Pollutants (TRAP) and Fasting Glucose Levels in Adolescents from the Meta-AIR Study

Variable Adjusted Partial r p-value % Reduction Compared with no Adjustment for Taxa†
Body Fat Percent 0.45 0.004 ––
Body Fat Percent and Bacteroidaceae 0.34 0.03 24%
Body Fat Percent and Coriobacteriaceae 0.32 0.049 29%

Partial Spearman correlations between freeway TRAP exposure and fasting glucose levels adjusted for body fat percent or body fat percent in conjunction with the relative abundance of bacterial taxa (i.e., Bacteroidaceae and Coriobacteriaceae).

†

Calculated as 100 X (partial correlation coefficient adjusted for body fat percent – partial correlation coefficient adjusted for body fat percent and bacterial taxa)/partial correlation coefficient adjusted for body fat percent.