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Use of clips to prevent delayed post-polypectomy bleeding in non-pedunculated colorectal lesions: protocol for a systematic review and meta-analysis

Por: Wei · Y. · Zhang · S. · Mabenga · H. S. · Ngowi · B. J. · Jin · Z.
Introduction

Delayed post-polypectomy bleeding (DPPB) remains a significant complication of endoscopic resection, contributing to morbidity and increased healthcare costs. Although prophylactic clipping is widely practised to mitigate this risk, evidence from recent randomised controlled trials (RCTs) regarding its efficacy is inconsistent. This protocol outlines a systematic review and meta-analysis to evaluate the effectiveness of prophylactic clips following thermal resection.

Methods and analysis

We will conduct a comprehensive search of MEDLINE, EMBASE and the Cochrane Library from inception to 10 February 2026, to identify RCTs comparing prophylactic clips vs no clips in patients undergoing thermal endoscopic resection of non-pedunculated polyps. The primary outcome is DPPB within 30 days, defined as overt bleeding requiring medical intervention or a haemoglobin decrease ≥2 g/dL. Secondary outcomes include DPPB in proximal large (≥20 mm) lesions, perforation, post-polypectomy syndrome and procedure time. Data synthesis will use a random-effects model. Methodological quality will be assessed using the Cochrane Risk of Bias 2 tool. Publication bias will be visualised using funnel plots. We will quantify the effect of potential effect modifiers by meta-regression if appropriate. The quality of evidence will be evaluated according to the Grading of Recommendations Assessment, Development and Evaluation framework.

Ethics and dissemination

This study will not use primary data, and therefore formal ethical approval is not required. The findings will be disseminated through peer-reviewed journals and committee conferences.

PROSPERO registration number

CRD420251246840.

Transforming health systems in Tanzania towards universal health coverage: a scoping review of policy evolution, 1961-2025

Por: Kiremeji · M. · Kibusi · S. M. · Eliakimu · E. · Mpagama · S. G. · Julius · M. · Ngowi · R. · Armour · A. · Masuma · J. · Msemwa · F. · Nzeyimana · E. · Medarakani · H. · Kilindimo · S. · Katalambula · L. · Sawe · H. · Magembe · G.
Background

Tanzania carries a dual burden of communicable and non-communicable diseases while remaining vulnerable to emerging pandemics of public health concern. Since its independence in 1961, Tanzania has implemented successive health reforms aimed at expanding access and moving towards universal health coverage (UHC). Despite notable progress, inequities in access, quality and financial protection persist. This review examined how policy evolution (1961–2025) addressed or reinforced inequities and the lessons for building resilience and equity in UHC.

Methods

We conducted a scoping review of national health policies, strategies, legislation and the related literature (1961–2025), following Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) guidelines. Eligible sources included government reports, strategic plans, evaluation reports and peer-reviewed or grey literature. Data were analysed using the Walt and Gilson Policy Triangle and mapped against the WHO Health Systems Building Blocks.

Results

Out of 10 435 records identified, 60 documents met the inclusion criteria. Policy evolution reflected five broad reform episodes, ranging from postindependence centralisation to primary healthcare, structural adjustment and cost-sharing, sector-wide reforms and recent UHC-focused financing strategies. Reforms shifted from politically driven, top-down policies to participatory and evidence-informed approaches. Mapping showed progressive but uneven gains across service delivery, workforce, financing, governance, medicines and information systems. Six thematic shifts towards UHC were identified: fragmented to pooled financing, routine delivery to resilient systems, paper to digital systems, workforce numbers to distribution and skills-mix, state-only to mixed providers and expansion to effective coverage.

Conclusion

Tanzania’s reform trajectory illustrates adaptive progress, but persistent inequities in financing, workforce distribution and service access remain. Achieving equitable and resilient UHC will require stronger domestic financing, governance and primary care, with transferable lessons for other low- and middle-income countries.

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