HBPM arm intervention
Participants in this arm received resources on the HH4NM website available to the control arm plus a blood pressure monitor (iHealth, Wireless Blood Pressure Monitor BP5). Arm circumference was measured at the initial study visit and individuals received an appropriately sized cuff. Participants received instruction from study staff on home measurement of blood pressure and were asked to measure blood pressure daily for one week out of each month, two measures in the morning and two measures in the evening.(20) Participants were instructed on proper measurement technique, including measuring in the seated position after five minutes at rest. We used automated text messaging for reminders. Individuals received summative information through the iHealth application, as well as monthly summaries from study staff outlining the number of measures provided, mean blood pressure values and their comparisons to prior months.