Effect of Interventions on the Transmission of BP Measurements
At 3 months after randomization, the proportion of participants who transmitted BP measurements was larger in the personalized messaging group compared to the standard messaging group (126/324, 38.9% vs 94/327, 28.8%), for an absolute difference of 10.1% (95% CI 2.9%-17.4%; There was no evidence of interaction between the 3 types of messaging interventions (personalized vs standard, weekend vs weekday, and morning vs evening; In the longitudinal analysis of weekly transmission, there was also evidence that the proportion of participants who transmitted BP measurements was larger in the personalized messaging group compared to the standard messaging group over 24 weeks (Comparisons of proportions of participants transmitting blood pressure measurements according to messaging trial assignment.Proportion of participants transmitting at least one blood pressure measurement within 7 days of each weekly notification in the personalized versus standard messaging groups.