Key result
Active use of the Cardi.Health mobile app was associated with nearly double the odds of reducing systolic blood pressure by 5 mm Hg or more over 4 weeks compared to nonactive use (OR 1.932).
Why the study?
Mobile app interventions are associated with lowered blood pressure, but real-world data on app effectiveness and engagement remain limited.
Does active engagement with the Cardi.Health mobile app reduce blood pressure in users with elevated baseline blood pressure?
Observational (n=339)
Does active engagement with the Cardi.Health mobile app reduce blood pressure in users with elevated baseline blood pressure?
Odds Ratio: 1.932 (95% CI 1.074–3.528)
p-value: p=.03
Active engagement with a mobile health app is associated with clinically meaningful reductions in systolic blood pressure over a 4-week period.
BACKGROUND: The high prevalence of hypertension necessitates effective, scalable interventions for blood pressure (BP) control. Self-monitoring has shown improved adherence to medication and better BP management. Mobile apps offer a promising approach with their increasing popularity and potential for large-scale implementation. Studies have demonstrated associations between mobile app interventions and lowered BP, yet real-world data on app effectiveness and engagement remain limited. OBJECTIVE: In this study, we analyzed real-world user data from the Cardi.Health mobile app, which is aimed at helping its users monitor and control their BP. Our goal was to find out whether there is an association between the use of the mobile app and a decrease in BP. Additionally, the study explored how engagement with the app may influence this outcome. METHODS: This was a retrospective chart review study. The initial study population comprised 4407 Cardi.Health users who began using the app between January 2022 and April 2022. After applying inclusion criteria, the final study cohort comprised 339 users with elevated BP at the baseline. The sample consisted of 108 (31.9%) men and 231 (68.1%) women (P=.04). This retrospective chart review study obtained permission from the Biomedical Research Alliance of New York Institutional Review Board (June 2022, registration ID 22-08-503-939). RESULTS: =5.311; P=.02). Finally, active users had an almost 2 times greater chance of reducing systolic BP by 5 mm Hg or more over 4 weeks (odds ratio 1.932, 95% CI 1.074-3.528; P=.03). CONCLUSIONS: This study shows a possible relationship between Cardi.Health mobile app use and decreased BP. Additionally, engagement with the app may be related to better results-active use was associated with an almost 2-fold increase in the odds of reducing BP by 5 or more mm Hg.
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Nakrys et al. (2023) conducted an observational in Elevated blood pressure (n=339). Active use of Cardi.Health mobile app vs. Nonactive use of the app was evaluated on Reduction of systolic blood pressure by ≥5 mm Hg over 4 weeks (OR 1.932, 95% CI 1.074-3.528, p=.03). Active use of the Cardi.Health mobile app was associated with nearly double the odds of reducing systolic blood pressure by 5 mm Hg or more over 4 weeks compared to nonactive use (OR 1.932).
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