Comparative Effectiveness Research Study of Peripheral Arterial Disease (PAD)

Inclusion Criteria: 1. Diagnosis of claudication 2. Be undergoing one of three treatments for claudication: * Surgical bypass (use of synthetic or endogenous (vein) or composite graft to treat lesions in the superficial femoral, common femoral or popliteal artery) * Endovascular therapy (angioplasty and/or stent to treat lesions in the superficial femoral, common femoral or popliteal artery) * Medical management (i.e. smoking cessation, walking therapy, long-term monitoring by physician) Exclusion Criteria: 1. those with documented acute ischemia, rest pain or ulceration 2. those with claudication determined to be of aortic or iliac origin 3. those with claudication that is not caused by atherosclerotic disease 4. those without access to a telephone or Internet and are unwilling to participate in surveys by mail at home (assess in patient screen) 5. those who otherwise refuse to participate (assessed in patient screen) 6. those who have a diagnosis of dementia confirmed in their medical record 7. those who are not English speaking 8. children and young adults up to and including age 20-years