GSTM1 and anemia: The univariate logistic regression analysis of the postoperative values revealed that the following indices were significantly different (P<0.05): age group; lung infection/pneumonia; coagulation parameters: PT classification, fibrinogen classification, and D-D group; liver function: AST/ALT, albumin, PBA, globulin, total protein (TP), and TBIL classification; CBC: WBC, HCT, RBC, lymphocytes, eosinophils, Hb, and anemia; and kidney function: uric acid (Figure 2).