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. Author manuscript; available in PMC: 2020 Nov 1.
Published in final edited form as: Environ Int. 2019 Jun 14;132:104723. doi: 10.1016/j.envint.2019.03.071

Fig. 1.

Fig. 1.

Quantile-quantile (QQ) plot of observed vs. expected −log10 P-value of each CpG site from trans-ethnic, fixed-effects meta-analyses of 2-, 7-, 28-, and 365-day PM10 and 1- and 12-month PM10 and PM2.5. The red diagonal line references the methylome-wide significance threshold (P < 1.0 × 10−7). Lambda (λ) is the inflation factor. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)