Project VOICE: Vascular Outcomes Improvement Through Collection of PatiEnt Reported Data

This is a two center, non-blinded, 2 period randomized crossover trial. 50 patient subjects
are planned. Patient participants will be identified and recruited from clinical environments
(including clinics and diagnostic testing departments) at participating sites. Diagnosis and
testing will occur through usual clinical care, and participants will not incur financial
costs related to participation. A crossover design will be utilized, where all participants
will use the VOICE platform with activity tracking for 35 days and usual care for 30 days.
Randomization will determine the order in which participation in the VOICE phase versus the
usual care phase occur. Randomization will occur using a closed envelope system. For patients
in the VOICE platform group, data collection will occur over a total of 35 days, including an
initial 5-day "run in" period during which participants will orient themselves to the system.
Each provider participant will receive a single end-user survey evaluating VOICE from their
perspective.

Screening of patients electronic medical records will be done to determine subject
eligibility. Subjects who meet all inclusion criteria will be approached to participate.

Total duration of subject participation will be 9 weeks during the control and intervention
phases, with a final follow-up survey at 6 months post-enrollment.

Inclusion Criteria:

- Clinical diagnosis of symptomatic PAD with claudication

- Ankle- brachial index (ABI) ≤ 0.9 or non-compressible leg arteries

- Walking exercise therapy recommended as treatment for PAD by the healthcare provider

- Willingness to be randomized to VOICE platform or control group

- Ability to access the internet

- Willing to sign an informed consent

Exclusion Criteria:

- Walking exercise therapy not recommended due to contraindication or any other reason

- Wheelchair dependence or inability to walk unassisted

- Presence of foot ulcers, wounds, or gangrene

- History of major extremity amputation

- Lack of objective physiologic data validating PAD diagnosis

- Claudication symptoms due to diagnoses other than PAD (i.e., popliteal entrapment
syndrome)

- Inability to speak or read English

- Severe mental illness

- Inability to give informed consent