TABLE 2.
Percentage of Surgeons (N = 596) Who Would Provide Chemoprophylaxis in Response to Isolated Risk Factors
| Risk Factors and Numeric Score From Davison 2004 | Percentage of Surgeons Providing Chemoprophylaxis |
|---|---|
| 1 factor | |
| Age >40 | 15 |
| Surgical time >45 min | 11 |
| Obesity | 52 |
| Estrogen/OCP use | 35 |
| Pregnancy | 19 |
| 2 factors | |
| Surgical time >4h | 46 |
| Malignancy | 47 |
| Age >60 | 19 |
| 3 factors | |
| Personal DVT or PE | 90 |
| Family history DVT or PE | 41 |
| 5 factors | |
| Recent spinal cord injury | 34 |
| Recent multi-system trauma | 43 |
| Lower extremity fracture | 50 |
| Recent stroke | 23 |
The risk factors were subdivided on the risk factor units that Davidson et al assigned. The higher the risk factor unit, the higher the risk to favor VTE.
OCP indicates oral contraceptive pills; DVT, deep venous thrombosis; PE, pulmonary embolism.