“…In the study by Overby et al [12] , clinical assessment of VTE risk was augmented by focused plasma screening for common thrombophilias (factors VIII, IX and XI, D-dimer, fibrinogen, antithrombin III deficiency, protein C/S deficiency, factor V Leiden mutation, anticardiolipin antibodies and lupus anticoagulant). Some of the clinical risk factors for IVC filter placement were accounted for in one study [7] by propensity matching using all of the demographic, weight, medical history, weight-related comorbidity, and procedure-related variables. All patients received pharmacological DVT prophylaxis regardless of preoperative IVC filter placement (Table 2).…”