Rosuvastatin/Ezetimibe Versus Rosuvastatin in ASCVD Patients With Type 2 DM

Inclusion Criteria: 1. Aged 19 and above 2. Patient with type 2 diabetes taking oral diabetes medication for at least 3 months 3. Patient diagnosed with ASCVD * Myocardial Infarction (MI) * Acute coronary syndrome (ACS) * History of Coronary revascularization(Percutaneous Coronary Intervention, PCI) * History of Coronary artery bypass graft surgery (CABG) or other arterial revascularization procedures * Stroke or Transient ischemic attack (TIA) * Peripheral Arterial Disease (PAD) * Stable Angina 4. Written informed consent Exclusion Criteria: 1. Type 1 diabetes 2. HbA1c \> 8.5% at screening 3. Fasting triglyceride ≥ 400 mg/dL at screening 4. History of muscular disease or rhabdomyolysis due to use of statin 5. Hypersensitive to rosuvastatin or ezetemibe 6. Contraindications stated in the SPC of rosuvastatin or rosuvastatin/ezetimibe including the following: ① Severe renal disease (CrCL \< 30mL/min: Cockcroft-gault formula or estimated GFR (MDRD) \< 30mL/min/1.73m2) ② ALT, AST \> 3x ULN or history of active liver disease ③ CPK \> 3x ULN 7. Those participating in clinical trials of other drugs 8. Other than the above who is deemed to be ineligible to participate in the trial by investigator