Background. Hyperglycemia is common and difficult to control in perioperative patients with type 2 diabetes mellitus (T2DM). which impacts their prognosis after operation. Our study investigated the short-term effect of continuous subcutaneous insulin infusion (CSII) and multiple daily injection (MDI) in perioperative T2DM patients using the data envelopment analysis (DEA). https://www.alexmatia.com/product-category/breakfast-cereal-granola/