Risk factors Patients screened for factor V Leiden and factor II G20210A mutations (n=40) Patients carriers of factor V Leiden  or  factor II G20210A mutation (n=6) Age(mean± SD) 49± 15.6 years 44 ± 5.4 years Immobility 15(37.5%)  0 Pregnancy/postpartum 7(17.5%) 1(16.66%) Oral contraceptives 4(10%) 0 Obesity 2(5%) 0 Recurrent DVT 2(5%) 1(16.66%) Spontaneous DVT 3(10%) 2(33.33%) Family history of DVT 2(5%) 2(33.33%) Diabetes 3(7.5%) 0 hypertension 3(7.5%) 0 Surgery 8(20%) 0 fractures 4(10%) 0

Table 2: Clinical risk factors in all VTE patients included in the study.