Table 1 Wells scale
Clinical feature | Score |
|---|---|
Active cancer (treatment ongoing or within previous 6 months or palliative) | 1 |
Paralysis, paresis, or recent plaster immobilization of the lower extremities | 1 |
Recently bedridden for more than 3 days or major surgery, within 4 weeks | 1 |
Localized tenderness along the distribution of the deep venous system | 1 |
Entire leg swollen | 1 |
Calf swelling by more than 3 cm when compared with the asymptomatic leg (measured 10 cm below tibial tuberosity) | 1 |
Pitting edema (greater in the symptomatic leg) | 1 |
Collateral superficial veins (non-varicose) | 1 |
Alternative diagnosis as likely or greater than that of deep-vein thrombosis | −2 |