Exposure is evaluated as the average from the first week before the visit (0–1 weeks) and 12 weeks earlier (0–12). Significant P-values ( P ≤ 0.05) are reported in bold when the p-FDR is <0.10. β regression coefficients are reported for 1 µg/m3increase in the concentration of each pollutant. Estimates were calculated from multivariate models adjusted for LDL-C (Low-Density Lipoprotein Cholesterol), IL-6 (interleukine-6), fibrinogen, season, BMI (body mass index), and smoking habits. PM, particulate matter; NO2, nitrogen dioxide