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Table 1 Wells scale

From: Analysis of the accuracy of the Wells scale in assessing the probability of lower limb deep vein thrombosis in primary care patients practice

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