Non-pharmacological interventions for the prevention of hypertension in low-income and middle-income countries: protocol for a systematic review and meta-analysis

INTRODUCTION: In recent times, hypertension has become one of the major public health concerns in both the developed and the developing world and is responsible for death due to heart diseases and stroke. The increasing trend of the prevalence of hypertension in low-income and middle-income countries (LMICs) and it’s catastrophic consequences have made the phenomenon important to continue to investigate interventions for its prevention and control. Different dietary and lifestyle-related approaches have been recommended for the prevention of hypertension. The aim of this proposed review is to explore the available non-pharmacological interventions tried for the prevention of hypertension in LMICs. METHODS AND ANALYSIS: Eight electronic databases will be searched covering the period between 1990 and 2016 to identify relevant studies and will be screened by two independent reviewers. The searched articles will be included for full-text extraction applying definitive inclusion and exclusion criteria. Appropriate critical appraisal tools including the Cochrane Handbook for Systematic Reviews of Interventions will be used to assess the risk of bias. Disagreement between the two reviewers will be resolved by a third reviewer. Narrative synthesis of the findings will be provided along with summaries of the intervention effect. A meta-analysis will be undertaken using the random-effects model where applicable. Heterogeneity between the studies will be assessed, and sensitivity analysis will be conducted based on study quality. ETHICS AND DISSEMINATION: Approval from the institutional review board has been taken for this review. Findings will be summarised in a single manuscript. This review is an attempt to explore the available non-pharmacological approaches for the prevention of hypertension in LMICs. Findings from the review will highlight effective non-pharmacological measures for the prevention of hypertension to guide policy for future strategies. PROSPERO REGISTRATION NUMBER: CRD42017055423.