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. Author manuscript; available in PMC: 2019 Feb 1.
Published in final edited form as: Environ Int. 2017 Dec 20;111:14–22. doi: 10.1016/j.envint.2017.11.010

Figure 2.

Figure 2

Histograms of A) 2003 Annual Average Fine Particulate Matter (PM2.5) and B) Distance to Major Roadways Among Participants From the Framingham Offspring Cohort Examination 7 (1998–2001), Examination 8 (2005–2008), Third Generation Cohort Examination 1 (2002–2005), or Examination 2 (2008–2011). There were 5,958 participants (10,389 observations) with 2003 annual PM2.5, and 5,403 participants (9,264 observations) with proximity measurements.