Fig. 3From: Pro-thrombotic changes associated with exposure to ambient ultrafine particles in patients with chronic obstructive pulmonary disease: roles of lipid peroxidation and systemic inflammationAssociations between air ultrafine particle (UFP) levels and biomarkers of lipid peroxidation and inflammation modified by COPD status. Shown are percent changes (95% CIs) in serum biomarker levels per 103/cm3 increase in UFP levels during the 1–14 days preceding the clinical visits. The significant between-group differences in UFP-associated biomarker changes with Pinteraction < 0.05 were indicated by asterisksBack to article page