Table 1.

The Wells rule and the revised Geneva score

Wells rule	Score	Revised Geneva score	Score
Clinical signs of DVT	3	Age >65 years	1
Previous DVT or PE	1.5	Previous DVT or PE	3
Surgery or immobilization within 4 weeks	1.5	Surgery or fracture within 1 month	2
Active malignancy	1	Active malignancy	2
Alternative diagnosis less likely than PE	3	Unilateral lower limb pain	3
Hemoptysis	1	Hemoptysis	2
Heart rate >100 beats/min	1.5	Heart rate 74–95 beats/min	3
		Heart rate >95 beats/min	5
		Pain on lower limb deep vein palpation and unilateral edema	4
Clinical probability (revised Wells score)		Clinical probability
Low	<2	Low	0–3
Intermediate	2–6	Intermediate	4–10
High	>6	High	≥11
PE unlikely	≤4
PE likely	>4

DVT, deep venous thrombosis; PE, pulmonary embolism.