CYGB and neoplasm: Univariate logistic analysis revealed 14 risk factors associated with postoperative lower limb DVT, including age; blood transfusion volume; open/laparoscopic radical gastrectomy; blood type; tumor location; CA125, TG, LDL, HGB, D-D, and INR; and postoperative electrolyte levels K+, Cl−, and Ca2+ (P value < 0.05; Table 1, Supplementary Fig. 1).