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Health systems interventions for hypertension management and associated outcomes in Sub-Saharan Africa: A systematic review

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  • Samuel Byiringiro
  • Oluwabunmi Ogungbe
  • Yvonne Commodore-Mensah
  • Khadijat Adeleye
  • Fred Stephen Sarfo
  • Cheryl R Himmelfarb

Abstract

Hypertension is a significant global health problem, particularly in Sub-Saharan Africa (SSA). Despite the effectiveness of medications and lifestyle interventions in reducing blood pressure, shortfalls across health systems continue to impede progress in achieving optimal hypertension control rates. The current review explores the health system interventions on hypertension management and associated outcomes in SSA. The World Health Organization health systems framework guided the literature search and discussion of findings. We searched PubMed, CINAHL, and Embase databases for studies published between January 2010 and October 2022 and followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. We assessed studies for the risk of bias using the tools from the Joanna Briggs Institute. Twelve studies clustered in 8 SSA countries met the inclusion criteria. Two thirds (8/12) of the included studies had low risk of bias. Most interventions focused on health workforce factors such as providers’ knowledge and task shifting of hypertension care to unconventional health professionals (n = 10). Other health systems interventions addressed the supply and availability of medical products and technology (n = 5) and health information systems (n = 5); while fewer interventions sought to improve financing (n = 3), service delivery (n = 1), and leadership and governance (n = 1) aspects of the health systems. Health systems interventions showed varied effects on blood pressure outcomes but interventions targeting multiple aspects of health systems were likely associated with improved blood pressure outcomes. The general limitations of the overall body of literature was that studies were likely small, with short duration, and underpowered. In conclusion, the literature on health systems internventions addressing hypertension care are limited in quantity and quality. Future studies that are adequately powered should test the effect of multi-faceted health system interventions on hypertension outcomes with a special focus on financing, leadership and governance, and service delivery interventions since these aspects were least explored.

Suggested Citation

  • Samuel Byiringiro & Oluwabunmi Ogungbe & Yvonne Commodore-Mensah & Khadijat Adeleye & Fred Stephen Sarfo & Cheryl R Himmelfarb, 2023. "Health systems interventions for hypertension management and associated outcomes in Sub-Saharan Africa: A systematic review," PLOS Global Public Health, Public Library of Science, vol. 3(6), pages 1-21, June.
    • Handle: RePEc:plo:pgph00:0001794
    DOI: 10.1371/journal.pgph.0001794
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    References listed on IDEAS

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