Fig. 4From: Validation of the Vascular quality of life questionnaire – 6 for clinical use in patients with lower limb peripheral arterial diseaseResponsiveness to change. Receiver operator characteristics (ROC) curve of VQ6 summary score change compared to clinical improvement as evaluated by the vascular surgeon, improvement of ABI at rest > 0.1, improvement in treadmill walking distance of more than 50% and improvement in Fontaine classBack to article page