Table. 2—

Clinical prediction rules for pulmonary embolism

Wells score [23]			Revised Geneva score [24]
Variable		Points	Variable		Points
Active cancer		+1	Age >65 yrs		+1
Haemoptysis		+1	Active cancer		+2
Previous DVT or PE		+1.5	Haemoptysis		+2
Heart rate >100 beats·min⁻¹		+1.5	Previous DVT or PE		+3
Surgery or bed rest ≥3 days within 1 month		+1.5	Surgery or lower limb fracture within 1 month		+2
Clinical signs of DVT		+3	Unilateral oedema and pain at palpation		+4
No alternative diagnosis as more likely than PE		+3	Spontaneously reported calf pain		+3
			Heart rate 75–94 beats·min⁻¹		+3
			Heart rate ≥95 beats·min⁻¹		+5
Clinical probability	Points	PE %	Clinical probability	Points	PE %
Low	<2	2–6	Low	≤3	7–12
Intermediate	2–6	17–24	Intermediate	4–10	22–31
High	≥7	54–78	High	≥11	58–82
Clinical probability (dichotomised)
PE unlikely	≤4	8–13
PE likely	>4	37–56