Supporting Self-Management of Healthy Behaviors in Diabetes, Kidney Disease, and Hypertension

The pilot trial is designed to study the feasibility of a smartphone-based behavioral intervention in a two groups of participants diagnosed with CKD, diabetes, and hypertension. The patients will be identified for eligibility by screening the scheduled for follow up appointments in the Penn renal CKD clinics. Patients will be prospectively enrolled after informed consent. Participants will be prospectively enrolled and will be randomized to participate into one of two arms.

• Arm 1: Social Support - the participant's performance shared with an identified personal support person, such as a friend or a family member or a Peer Mentor; the support person is encouraged to support the participant on at least a weekly basis. Prior to randomization, each participant will select their preference of a personal support personal or a Peer Mentor. A Peer Mentor is a person also with CKD, HTN, and diabetes who has successfully incorporated regular blood pressure monitoring into their lives.

• Arm 2: Social norms -Participants will have access to a leaderboard of all people in the study that shows blood pressure performance information (frequency and control). They will also receive weekly feedback regarding their personal blood pressure performance, compare to their individualized goals and from the preceding week.

All participants will receive text message reminders sent to prompt BP self-monitoring at least 5 times per week, transmit the BP readings to the secure Way to Health server via Omron Connect app. If a blood pressure reading is not received within 5 hours, another reminder will be sent. Automated text message feedback will be sent after the BP reading is recorded with a tailored message regarding any further required actions based upon the BP readings obtained. Any participant with a single systolic blood pressure reading 200mmHg or two consecutive systolic blood pressure readings 180 mmHg or diastolic blood pressure readings 110 mmHg will be contacted immediately by an MD (Dr. Schrauben) for assessment (including evaluation for symptoms of hypertensive emergency) and referral to the emergency department, if indicated. Please see full text message algorithm (attached protocol). Any participant will undergo re-engagement protocol for low participation.

To further support behavior engagement, there is a gamification element to the design:

• At the beginning of each week (Monday), all participants will receive 70 points (10 points for each day of the week). If participants do not send a BP each day, they will lose 10 points. The goal is to check BP at least 4 days per week.

• All participants will start the study at the second of five levels. At week's end (Sunday), if a participant has ≥40 points, their average SBP was in their individualized controlled goal, or their average BP declined from the week prior, they will move up a level to acknowledge goal attainment and improvement, and if not, they will drop a level.

• If a participant reaches the 4th level out of five, they will receive a digital trophy. At study's end, if they accumulate ≥5 trophies, they will receive a mug.

• If a participant reaches the 5th level, they will receive a digital medal. At study's end, if they accumulate ≥4 medals, they will receive a tote bag.

• Each week, participants will receive 50 points to leverage "fresh-start effect"

At the end of the study, each participant will be invited to participate in focus groups for additional feedback on their experience.