Paralysis, paresis or recent orthopaedic casting of lower extremity:
			Yes
			No
	Recently bedridden (>3 days) or major surgery in the last 4 weeks:
			Yes
			No
	Localised tenderness in deep vein system:
			Yes
			No
	Swelling of entire leg:
			Yes
			No
	Calf swelling >3cm compared with other leg (measured 10cm below tibial tuberosity):
			Yes
			No
	Pitting oedema greater in the symptomatic leg:
			Yes
			No
	Collateral non varicose superficial veins:
			Yes
			No
	Active cancer or cancer treated within 6 months:
			Yes
			No
	Alternative diagnosis more likely than DVT (Baker's cyst, cellulitis, muscle damage, superficial venous thrombosis, post phlebitic syndrome, inguinal lymphadenopathy, external venbous compression):
			Yes
			No