Effect of Telehealth Interventions on Blood Pressure Control: A Meta-analysis

The aim of this study was to find out the effects of telehealth interventions on blood pressure control by conducting a meta-analysis. Six databases were used. The literature review covered the period between December 1, 2020, and January 26, 2021. The meta-analysis was conducted by comprehensive Meta-Analysis Software version 2.2. Categorical variables were analyzed by odds ratios at a confidence interval of 95%. In data formatting and analysis, independent groups (sample size, P value); independent groups (mean, SD); Cohen's d, SE; and paired groups (N, P value) were used. The bias risk was assessed based on the Revised Cochrane Risk-of-Bias Tool for Randomized Trials. Total sample size including 22 studies was 11 120. It was determined that interventions performed through telehealth applications had a significant effect on blood pressure control (odds ratio = -0.14; 95% confidence interval = -0.20 to -0.08; P < .001). In telehealth applications, blood pressure values decreased more when the application was performed through a Web site (-0.31; 95% confidence interval = -0.49 to -0.13), duration of the intervention was 12 months or shorter (-0.18; 95% confidence interval = -0.28 to -0.010), stroke developed in case of hypertension (-0.31, 95% confidence interval = -0.76 to 0.12), and the study was conducted in the Far East countries (-0.24; 95% confidence interval = 0.40 to -0.07). Interventions with telehealth applications are effective in blood pressure management. PROSPERO ID: CRD42021228536.