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Interventions designed to improve vaccination uptake: Scoping review of systematic reviews and meta-analyses - protocol (version 1)

By Carl Heneghan, Annette Pluddemann, Elizabeth A Spencer, Jon Brassey, Elena Cecilia Rosca, Igho Onakpoya, David Evans, John M Conly, Noel T Brewer, Tom Jefferson

Posted 22 Aug 2021
medRxiv DOI: 10.1101/2021.08.18.21262232

Abstract Background Vaccine uptake varies substantially, and resources to promote the uptake of vaccines differ widely by country and income level. As a result, immunization rates are often suboptimal. There is a need to understand what works, particularly in low- and middle-income countries and other settings where resources are scarce. Methods: We plan to conduct a scoping review of interventions designed to increase vaccination uptake We will include systematic reviews and meta-analyses of interventional studies that address the question of vaccine uptake. We will search the following electronic databases: MEDLINE, Cochrane Database of Systematic Reviews, EMBASE, Epistemonikos, Google Scholar, LILACs and TRIP database (which covers guidelines and the grey literature) until 01 July 2021 and hand-search the reference lists of included articles. We will include systematic reviews that comprise studies of all ages if they report quantitative data on the impact on vaccine uptake. To assess the quality, we will use a modified AMSTAR score and ate the quality of the evidence in included reviews using the "Grade of Recommendations Assessment, Development and Evaluation" (GRADE). Expected results We intend to present the evidence using summary tables to present the evidence stratified by vaccine coverage, the specific population, e.g., children, adolescents and older adults, and by setting, e.g. healthcare, community. We will also present when low middle-income subgroups are reported.

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