Personalization of Messaging Content
fatigue
The standard notification invited participants to wear the watch daily and measure their BP weekly and was sent as a single message as follows: “We appreciate your involvement in the eFHS. Please wear your watch daily and measure your blood pressure weekly.” To personalize notifications, we included the participant’s name and customized the messaging content to whether or not the participant’s data were received in the prior week. For example, if data had not been received from the watch, the following message type was sent: “Mr X [FHS last name], we haven’t received data from your apple watch since [mm/dd/yy]. If you need help to reconnect, will you please call 508-935-xxxx or email xxxxx@bu.edu?” If data had already been received, the message was as follows: “Mr X [FHS last name] we have been receiving data from your apple watch. Keep up the good work!” One set of personalized messages targeted the use of the watch, and the other targeted the use of the BP cuff. The 2 messages (one for the watch and one for BP) were sent each week, with the message order alternating each week. Finally, to reduce notification fatigue, the specific messages were drawn at random from a library of personalized notification templates we developed with alternative motivational content (