Atrial fibrillation (AF) is a highly prevalent, morbid condition. Anticoagulation to prevent thromboembolic strokes is a foremost priority in AF but adherence is challenging for patients and lapses in anticoagulation are common. Chronic disease self-management (CDSM) is a recognized program to enhance self-efficacy and improve adherence, quality of life, and patient-centered health outcomes. Rural patients with AF experience increased vulnerability to adverse outcomes due to geographic and social isolation, poor health care access, and limited health literacy. This study uses an innovative, scalable CDSM intervention to improve anticoagulation adherence in rural patients with AF.
This is a randomized clinical trial to evaluate the effect of an embodied conversational agent (ECA) on health outcomes in people with atrial fibrillation. The study will enroll 264 patients who reside in rural, Western Pennsylvania who have atrial fibrillation. Participants will be randomized to the intervention or usual care. Intervention participants will receive a contemporary mobile phone, commonly known and referred to herein as a smartphone, with a relational agent, which simulates conversation and provides coaching, guidance, and assistance with chronic disease self-management. In addition participants will receive an FDA-approved instrument for heart rate and rhythm monitoring, which is named the "AliveCor KardiaMobile" device (herein referred to as the AliveCor Kardia), that pairs with the relational agent. Usual care participants will receive a smartphone as well, which will have the general health application called "WebMD." The intervention will last 4 months and participants will have visits at baseline, 4, 8 and 12 months. The study will evaluate the improvement in adherence to anticoagulation, quality of life, and health care utilization resulting from the intervention.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
HEALTH_SERVICES_RESEARCH
Masking
NONE
Enrollment
270
Use of the relational agent and Kardia daily for 120 days.
Use of the WebMD app daily for 120 days.
University of Pittsburgh Medical Center
Pittsburgh, Pennsylvania, United States
Proportion of Days Covered
Proportion of Days Covered (PDC), obtained from collection of electronic prescription and pharmacy fill data, and defined as the proportion of availability of medication for the period of interest. PDC range is 0 to 1.00 with higher values indicating greater proportion of days with medication as indicated by pharmacy records.
Time frame: 12 months
Self-reported Adherence
Self-reported adherence to oral anticoagulation. 3-item instrument with range 1-5 such that lower scores indicate more frequent medication adherence. Here the score is dichotomized by classifying participants reporting 1 for all three items as adherent and those that reported ≥ 2 on any item as non-adherent.
Time frame: 4, 8, and 12 months
Atrial Fibrillation Effect on Quality of Life (AFEQT)
The AFEQT is a widely used measure of atrial fibrillation-specific health-related quality of life which consists of a global score and 4 domains (symptoms, daily activities, treatment concerns, and treatment satisfaction). Overall or subscale scores range from 0-100 with higher scores indicating superior health-related quality of life in AF. A score of 0 corresponds to complete disability (or responding "extremely" limited, difficult or bothersome to all questions answered), while a score of 100 corresponds to no disability (or responding "not at all" limited, difficult or bothersome to all questions answered).
Time frame: 4, 8, and 12 months
Patient-Reported Outcomes Measurement Information System (PROMIS)-29
Patient-Reported Outcomes Measurement Information System (PROMIS)-29 assesses 7 domains (physical function; depression and sadness; pain interference; satisfaction with participation in social roles and activities; fatigue; anxiety and fear; sleep disturbance), 4 questions each, and Pain Intensity with a single item. The 7 domain scores are transformed using a T-score with a mean of 50, standard deviation of 10, in a referent population. Higher scores indicate worse health for the depression, pain, fatigue, anxiety/sleep domains, while higher scores indicate better health for the physical function and satisfaction domains. The single Pain Intensity item is scored 0 (No pain) to 10 (Worst imaginable pain) in the past 7 days. Further details on PROMIS scoring are available at https://www.healthmeasures.net/images/PROMIS/manuals/PROMIS\_Adult\_Profile\_Scoring\_Manual.pdf.
Time frame: 4, 8, and 12 months
Emergency Room Visits
The number of participants with 1 or more emergency room visits will be quantified at 12 months. Data will be used to compare health care utilization between the two study arms.
Time frame: 12 months
Hospital Admissions
The number of participants with one or more hospitalization will be quantified at 12 months. Data will be used to compare health care utilization between the two study arms.
Time frame: 12 months
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