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| Risk Factors | N (%) |
| Obesity | 53 (53) |
| Recent surgery | 15 (15) |
| Family history of VTE | 9 (9) |
| Thrombophilia | 8 (8) |
| Immobilization | 8 (8) |
| Previous VTE | 7 (7) |
| Diabetes | 5 (5) |
| Recent hospitalization | 4 (4) |
| Hypertension | 2 (2) |
| Crohn’s disease | 1 (1) |
| Nephrotic syndrome | 1 (1) |
| Cancer | 1 (1) |
| Other | 12 (12) |
| Trauma | 3 (3) |
| Abortion | 3 (3) |
| Pulmonary hypertension | 2 (2) |
| Seizure disorder | 1 (1) |
| Post-partum | 1 (1) |
| Splint fracture | 1 (1) |
