Utilization of DPP4 Inhibitors for T2DM

The cost of DPP4 inhibitors for the treatment of T2DM began to be reimbursed by NHI in March, 2009 and the prescriptions included sitagliptin, vildagliptin, saxagliptin, alogliptin, and linagliptin. The anatomical Therapeutic Chemical (ATC) code in the patients’ post-T2DM-diagnosis prescription records, oral antiviral drug use, and insulin use are shown in Supplementary Table S1. Chronic HBV or HCV infection, and the comorbidities of cirrhosis were identified using International Classification of Diseases, Ninth Revision or Tenth Revision (ICD-9 or ICD-10, respectively) codes (Supplementary Table S2).