Fig. 1
Joint associations of physical activity and PM2.5 (A), PM10 (B), PMcoarse (C), and NO2 (D) with the incidence of type 2 diabetes. Abbreviations: CI, confidence interval; HR, hazard ratio; PA, physical activity. The results were obtained after adjusting for age, sex, race, education, household income, smoking status, alcohol consumption, body mass index, fruit and vegetable intake, family history of diabetes, hypertension, cardiovascular disease, depression, and cancer