Low VTE risk is 0-3 points; high VTE risk is ≥ 4 points.

BMI indicates body mass index; and MI, myocardial infarction.

*Patients with local or distant metastases or those who received chemo- or radiotherapy within the last 6 mo.

†Patients with bathroom privileges for at least 3 days.

‡Antithrombin, protein C, protein S, factor V Leiden, prothrombin gene mutation, antiphospholipid syndrome.