Fig. 2

The mixed effects of PM2.5 components on hypertension incidence and their index weights in lag 1 year. Abbreviations: BC, black carbon; SO42−, sulphate; OM, organic matter; NH4+, ammonium; NO3−, nitrate. Note: The quantile g-computation model was adjusted by age, sex, educational qualifications, marital status, residence, drinking and smoking status, relative humidity, and temperature. (a) the mixed effect of PM2.5 components; (b) the weights of PM2.5 components