A Scoping Review of Integrating Epidemiologic Evidence and Health Literacy to Support Community Action

Abstract

Background: Epidemiologic evidence can inform community action only when individuals and communities are able to access, comprehend, critically appraise, and apply relevant information, and when public health systems minimize avoidable demands on these capabilities. Health literacy therefore functions as a critical link between the interpretation of epidemiologic evidence, the development of guidance, risk communication, community engagement, and the material and institutional conditions necessary for action. However, these interrelated processes are often examined within separate bodies of literature.
Objective:This study aims to map the processes through which epidemiologic evidence is translated into health-literacy-responsive guidance and communication, identify the mechanisms and barriers that shape its progression toward community action, and develop integrated evidence–health literacy–action framework.
Methods: A scoping review followed JBI guidance and PRISMA-ScR reporting principles. PubMed and authoritative public health repositories were searched for English-language empirical studies, reviews, frameworks, and guidance addressing epidemiologic evidence, evidence-informed guidance, health literacy, knowledge translation, risk communication, community engagement, implementation, or community behavior. Data were charted by pathway stage, actors, mechanisms, context, equity considerations, and outcomes, then synthesized narratively through a health-literacy lens.
Results: Twenty-two sources were included: 17 peer-reviewed publications and 5 institutional documents. Five linked stages were identified: epidemiologic signal and community information needs; evidence synthesis and accessible interpretation; health-literacy-responsive guidance development; community translation and supported implementation; and action, outcomes, and feedback. Across stages, health literacy operated as a relational capacity shaped by the clarity, accessibility, credibility, cultural relevance, and actionability of information and by the resources available to act. Evidence-to-action was strengthened by triangulating evidence, communicating uncertainty, involving communities early, using trusted intermediaries, adapting language and delivery, pairing messages with accessible services or products, and maintaining feedback loops. Recurrent barriers were technical or inconsistent guidance, one-way communication, low trust, high comprehension or numeracy demands, language and digital exclusion, inequitable access, and evaluation limited to reach.
Conclusions: The translation of epidemiologic evidence into community action is negotiated and iterative rather than a linear transmission of facts. Health literacy should be treated as a shared responsibility of individuals, communities, communicators, and institutions. Equitable action is more likely when evidence is interpreted transparently, guidance is understandable and actionable, lived experience shapes delivery, and practical resources and continuous learning are integrated within an accountable pathway.