Association between antibiotic purchases and glycated hemoglobin (HbA1c) values in patients with and without diabetic nephropathy. Association between antibiotic purchases and glycated hemoglobin (HbA1c) values in patients with and without diabetic nephropathy. Patients with normal albumin excretion rate and microalbuminuria/macroalbuminuria are shown as open and closed squares, respectively. p Values (†p<0.05; *p<0.001). Johan R Simonsen et al. BMJ Open Diab Res Care 2015;3:e000067 ©2015 by American Diabetes Association