Fig. 2From: Associations of time-weighted individual exposure to ambient particulate matter with carotid atherosclerosis in Beijing, ChinaRelationship between individual time-weighted average exposure to PM2.5 and PM10 and carotid atherosclerosis. PM2.5, particulate matter with aerodynamic diameter < 2.5 μm; PM10, particulate matter with aerodynamic diameter < 10 μm; Q, quartile; HR, hazard ratio; CI, confidence interval; Ref, referenceBack to article page