Prenatal exposure to ambient air pollutants and early infant growth and adiposity in the Southern California Mother's Milk Study.

Therefore, we examined this association across tertiles of exposure and observed a positive association in the lowest tertile of exposure (β = 15.2; p = 0.03) and smaller inverse associations in the second (β = -2.2; p = 0.84) and third tertiles (β = -1.6; p = 0.43), which did not reach statistical significance.

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