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Warfarin-Associated Bleeding and Thromboembolic Events in Sub-Saharan Africa: A Systematic Review and Meta-Analysis.

Title: Warfarin-Associated Bleeding and Thromboembolic Events in Sub-Saharan Africa: A Systematic Review and Meta-Analysis.
Authors: Demsie DG; Department of Pharmacy, College of Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia.; Addisu ZD; Department of Pharmacy, College of Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia.; Tafere C; Department of Pharmacy, College of Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia.; Bahiru B; Department of Pharmacy, College of Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia.; Yismaw MB; Department of Pharmacy, College of Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia.; Mihret G; St. Peter Hospital, Addis Ababa, Ethiopia.; Berhe DF; Department of Pharmacology, Biomedical Division, and Center for Equity in Global Surgery, University of Global Health Equity, Kigali, Rwanda.
Source: Pharmacoepidemiology and drug safety [Pharmacoepidemiol Drug Saf] 2025 Oct; Vol. 34 (10), pp. e70225.
Publication Type: Journal Article; Meta-Analysis; Systematic Review
Language: English
Journal Info: Publisher: Wiley Country of Publication: England NLM ID: 9208369 Publication Model: Print Cited Medium: Internet ISSN: 1099-1557 (Electronic) Linking ISSN: 10538569 NLM ISO Abbreviation: Pharmacoepidemiol Drug Saf Subsets: MEDLINE
Imprint Name(s): Original Publication: Chichester, West Sussex : Wiley, 1992-
MeSH Terms: Anticoagulants*/adverse effects ; Anticoagulants*/administration & dosage ; Hemorrhage*/chemically induced ; Hemorrhage*/epidemiology ; Thromboembolism*/epidemiology ; Thromboembolism*/chemically induced ; Warfarin*/adverse effects ; Warfarin*/administration & dosage; Africa South of the Sahara/epidemiology ; Humans ; Observational Studies as Topic ; Prevalence
Abstract: Background: Warfarin use in Sub-Saharan Africa is associated with elevated risks of thromboembolic events and bleeding, but precise prevalence estimates are lacking. This systematic review and meta-analysis aimed to quantify the prevalence of bleeding and thromboembolic events among patients on warfarin in Sub-Saharan Africa.; Methods: Comprehensive searches were conducted in MEDLINE via Ovid, PubMed, Embase via Ovid, Scopus, and Google Scholar to identify relevant studies. Primary outcomes included major and minor bleeding events, while thromboembolic events were secondary outcomes. Meta-analysis was conducted using RStudio version 4.3.3 with the meta and metaprop packages. Proportions were transformed using the Freeman-Tukey double arcsine method, and meta-regression was performed with the metafor package's escal, rma, and res functions. Publication bias was assessed via funnel plots and Egger's test, with a p value
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Contributed Indexing: Keywords: Sub‐Saharan Africa; bleeding; thromboembolic event; warfarin
Substance Nomenclature: 0 (Anticoagulants); 5Q7ZVV76EI (Warfarin)
Entry Date(s): Date Created: 20250926 Date Completed: 20250926 Latest Revision: 20250926
Update Code: 20260130
DOI: 10.1002/pds.70225
PMID: 40999745
Database: MEDLINE

Journal Article; Meta-Analysis; Systematic Review