Participants
Claudication
CLAUDICATION, CRITICAL LIMB ISCHAEMIA
Patients with IC attending vascular surgery outpatient clinics were screened. Patients aged 18 years or older were eligible if they had a positive Edinburgh Claudication Questionnaire, and an ankle–brachial pressure index (ABPI) of <0.9 or positive stress test (fall in ankle pressure greater than 30 mmHg, 40 seconds post 1-minute treadmill at 10 per cent gradient, 4 km/h). Exclusion criteria included pregnancy, inability to complete the treadmill test or SET, severe IC requiring surgery, critical limb ischaemia as defined by the European Consensus Document