Objective To evaluate the safety and effectiveness of initiating once-daily insulin detemir(Levemir) as add-on therapy in patients with type 2 diabetes mellitus(T2DM) who failed treatment of oral anti-diabetic drugs(OAD).Methods The present study was derived from the data of Objective To evaluate the safety and effectiveness of initiating once-daily insulin detemir (Levemir) as add-on therapy in patients with type 2 diabetes mellitus (T2DM) who failed treatment of oral anti-diabetic drugs (OAD). Methods The present study was derived from the data of