Impact of long-term air pollution exposure on metabolic control in children and adolescents with type 1 diabetes: results from the DPV registry.

The inverse association between O3-AOT and HbA1c could not be explained by regional differences in diabetes treatment or by other differences between urban and rural areas. Furthermore, our results remained stable in sensitivity analyses. Further studies on the association between air pollution and HbA1c in children and adolescents with type 1 diabetes are needed to confirm our observed association and to elucidate underlying mechanisms.