DPP4 and diabetic ketoacidosis: The incidence rate of diabetic ketoacidosis (DKA) were 1.4 and 0.6 events per 1000 person years among SGLT-2i and DPP-4 inhibitors users, hazard ratios comparing SGLT-2i with DPP-4i was 2.14 (1.17–4.09).