To evaluate risk factors for total and symptomatic DVT, parameters such as age, gender, BMI, history of active cancer, hypertension, diabetes mellitus, history of stroke, smoking history, heart disease, SV diameter, surgery type, first ambulation time, postoperative pharmacological prophylaxis, operation time, transfusion, RBC, Hb, PLT, D-Dimer, PT, INR, APTT, TT, Fbg, and TG were compared. Here, GSTM1 is linked to stroke disorder.