Effect of Interventions on the Transmission of HR Measurements
At 3 months after randomization, there was no evidence of a difference in the proportions of participants transmitting HR measurements for any of the intervention: personalized versus standard notification (212/324, 65.4% vs 209/327, 63.9%; There was no evidence of interaction between interventions (Comparisons of proportions of participants transmitting heart rate measurements according to messaging trial assignment.Proportion of participants transmitting at least one heart rate measurement within 7 days of each weekly notification in the personalized versus standard messaging groups.