Fig. 1
Odds ratios (with 95% CI) of all mental health dimensions and self-rated health for an IQR increment in annual PM2.5, NO2 or BC concentration. Estimates were adjusted for age, gender, year of participation, region, country of birth, household composition, smoking status, highest educational level of the household and the quadratic term of age when both the linear and quadratic term were significant. *p ≤ 0.05. IQRs for PM2.5, BC, and NO2 were respectively 3.8 µg/m3, 0.6 µg/m3 and 10.8 µg/m3