The effectiveness of community-based interventions in the control of hypertension: A systematic review and meta-analysis

ABSTRACT

Introduction@#Uncontrolled hypertension can lead to increased morbidity and mortality secondary to end-organ damage. Community-based health interventions promote health changes in a community setting and have been shown to promote better and more cost-effective healthcare. Existing meta-analyses on community-based interventions in hypertension control are confined to a certain country, have high risks of bias, and have shown heterogeneous results. A gap in the applicability of these conclusions necessitates the present study@*Objective@#Synthesize available evidence on the effectiveness of community-based interventions in addition to standard of care in the control of blood pressure among hypertensive adults.@*Methods@#A meta-analysis of randomized and non-randomized controlled trials among hypertensive adults was conducted. A literature search from various search engines and electronic databases such as PubMed, Cochrane Central Register of Controlled Trials (CENTRAL) in The Cochrane Library, Google Scholar, Proquest, medRvix, and Grey literature was done by the investigators. Separate forest plots were generated for each desired outcome.@*Results@#Six studies were included. The pooled estimates showed a trend in favor of community-based interventions in the control of blood pressure [RR = 0.86, 95% CI 0.62 to 1.19, p = 0.37], reduction of systolic blood pressure, reduction of diastolic blood pressure [MD = -2.52, 95% CI -3.64 to -1.28, p < 0.001] and medication adherence [RR = 0.82, 95% CI 0.72 to 0.93, p = 0.0025]. However, there was high heterogeneity across studies. Subgroup analysis showed a favorable trend with lower heterogeneity in decreasing diastolic BP in particular, among community health worker-led interventions, and those involving health education and/or physical activity@*Conclusions/Recommendations@#Adherence to the current standard of care in the management of hypertension is still advised. There appears to be a trend towards control of blood pressure with community-based interventions; and a reduction of diastolic blood pressure with interventions that are led by community health workers involving health education and/or physical activity. There is a need to empower community health workers and conduct additional studies on the specific community-based interventions targeting communities as a whole whenever resources and current health restrictions allow