Communicating risk is part of primary prevention of coronary heart disease and stroke, collectively referred to as cardiovascular disease (CVD). In Australia, health organisations have promoted an absolute risk approach, thereby raising the question of suitable standardised formats for risk communication.

Background: Systematic reviews have developed into a powerful method for summarising and synthesising evidence. The rise in systematic reviews creates a methodological opportunity and associated challenges and this is seen in the development of overviews, or reviews of systematic reviews. One of these challenges is how to summarise evidence from systematic reviews of complex interventions for inclusion in an overview. Interventions for communicating with and involving consumers in their care are frequently complex. In this article we outline a method for preparing data integration tables to enable review-level synthesis of the evidence on interventions for communication and participation in health. Methods and Results: Systematic reviews published by the Cochrane Consumers and Communication Review Group were utilised as the basis from which to develop linked steps for data extraction, evidence assessment and synthesis. The resulting output is called a data integration table. Four steps were undertaken in designing the data integration tables: first, relevant information for a comprehensive picture of the characteristics of the review was identified from each review, extracted and summarised. Second, results for the outcomes of the review were assessed and translated to standardised evidence statements. Third, outcomes and evidence statements were mapped into an outcome taxonomy that we developed, using language specific to the field of interventions for communication and participation. Fourth, the implications of the review were assessed after the mapping step clarified the level of evidence available for each intervention. Conclusion: The data integration tables represent building blocks for constructing overviews of review-level evidence and for the conduct of meta-synthesis. Individually, each table aims to improve the consistency of reporting on the features and effects of interventions for communication and participation; provides a broad assessment of the strength of evidence derived from different methods of analysis; indicates a degree of certainty with results; and reports outcomes and gaps in the evidence in a consistent and coherent way. In addition, individual tables can serve as a valuable tool for accurate dissemination of large amounts of complex information on communication and participation to professionals as well as to members of the public.

Every healthcare encounter involves some form of communication and there is growing recognition that effective health communication is central to the delivery of safe, high-quality healthcare. Conversely, poor communication has a range of adverse consequences for those receiving healthcare and the systems delivering care, including elevated patient safety risks. Increasing understanding and documentation of the key role that good communication plays in healthcare design and delivery has meant there is growing demand from policy-makers and other decision-makers for evidence on the effects of health communication interventions – that is, how best to communicate. While systematic reviews of such interventions are fundamental to building this evidence base, such interventions and reviews are often highly complex and pose considerable challenges for authors and editors. In this paper, we describe our experience as a Cochrane editorial group identifying common issues in reviews of communication interventions and developing resources to support authors to better meet these challenges. Our analysis found that issues typically fell into one or more of the following three stages of the review process: understanding and applying systematic review methods (e.g. selecting outcomes for analysis); reporting the review’s methods (e.g. describing key decisions made in conducting the review); and interpreting the findings (e.g. incorporating quality of the evidence into findings of the review). We also found that common issues reflected both practical difficulties (such as the typically large size of reviews and disparate measures for outcomes) and conceptual challenges (for instance, the difficulties of identifying comparisons). While extensive advice for Cochrane systematic reviewers exists, this standardised advice does not cover all of the issues emerging for complex communication reviews. In response, we therefore developed a collection of resources, both general and targeted to specific methodological issues. Here, we describe the types of resources developed and the aims of these, the rationale for why we needed to fill specific gaps in existing advice, and reflect on the lessons for future editorial practice, policies and research in relation to the implementation of Cochrane review methods in the area of health communication.