Adjusted mean HbA1c and difference in HbA1c comparing quartiles of particulate matter (PM10) exposure in type 2 diabetes patients*.

*Results are adjusted means for HbA1c in % calculated from generalized linear regression models. Models were fitted adjusting for age, sex, body mass index, duration of diabetes, geographic region, year of treatment, and social indicators (low education, immigration background). Furthermore, difference in HbA1c levels in % (95% CI) comparing quartiles of PM10 exposure also derived from linear regression models are presented. Group differences are considered as significant (highlighted in bold) if corresponding 95% confidence intervals do not include 0. HbA1c levels in % (NGSP) can be converted to mmol/mol (IFCC) by application of the following formula: IFCC = (10.93*NGSP)−23.50.