Ahmadi SS, et al. - Researchers assessed the incidence of atrial fibrillation in individuals with type 2 diabetes compared with age- and sex-matched controls from the general population, and evaluated its variation in relation to glycemic control and renal function. From the Swedish National Diabetes Registry, they identified 421,855 patients with type 2 diabetes. From the Swedish Population Registry, they selected 2,131,223 controls, who were matched for age, sex, and county. These individuals were followed from January 1, 2001, to December 31, 2013. Findings revealed an overall 35% higher risk of atrial fibrillation among people with type 2 diabetes vs age- and sex-matched controls. An uptick in the excess risk for atrial fibrillation was observed in relation to the presence of renal complications or poor glycemic control. A slightly increased risk was observed in people with type 2 diabetes with good glycemic control and normoalbuminuria.