Moreover, BMI (OR = 1.17, P = 0.001), female gender (OR = 4.6, P = 0.004), preoperative MHR (OR = 10.43, P = 0.008), postoperative LMR (OR = 0.12, P < 0.001), and postoperative Hb (OR = 0.96, P = 0.002) were independent risk factors for symptomatic DVT, which was also shown in Table 4. Here, GSTM1 is linked to deep vein thrombosis.