The PCORnet Blood Pressure Home Monitoring Study

We have designed a patient-level randomized controlled trial that will compare the effectiveness of Smartphone-linked versus standard HBPM for helping patients with uncontrolled hypertension achieve a reduction in their Systolic Blood Pressure (SBP), and patient satisfaction with the device. Our original plan was to recruit 2000 patients who would be randomized in a 1:1 ratio to receive a Smartphone-linked or standard HBPM. However, to recruit higher diversity with more African Americans and LatinX patients, we extended the recruitment period.* We will use data from the electronic health record (EHR), an online patient portal, and the home BP monitor (in the Smartphone-linked arm) to collect outcome data for a period of at least 6 months (for the primary outcome), and up to 18 months (for secondary outcomes, depending on enrollment date). The primary BP control outcome will be reduction in SBP, by clinic measurements, at 6 months. The primary patient satisfaction outcome will be the Net Promoter Score derived from self-reported likelihood of recommending the device to a friend, at 6 months.

*edited after completing recruitment

Inclusion criteria

• Age ≥ 18 years
• At least one ambulatory visit in one of the participating study sites during the past year
• SBP > 145 mmHg at most recent clinic visit (may be treated with BP meds already or not)
• A self-reported commitment to "work on lowering your blood pressure by 10 points or more to reduce your risk of heart attack and stroke"
• Owns a Smartphone (Android or iOS)
• Willing to receive text messages from the study
• Can read/write English well enough to use English-based Smartphone apps and fill out online surveys in English

Exclusion criteria

• Has an arm circumference <22 cm or >42 cm
• Owns a functioning HPBM and has used it in the last 3 months