Knowledge brokering in public health: a tale of two studies.

OBJECTIVES: A Knowledge Broker is one approach for facilitating the integration of evidence-informed decision making in public health practice. In this paper, the findings from two studies investigating a Knowledge Broker intervention as a means of enhancing capacity for evidence-informed decision making are presented. Contextual factors that facilitate this strategy are also identified. STUDY DESIGN: This paper describes work done through a single mixed-methods study (randomized controlled trial with a qualitative component) and a case study. METHODS: The Health Evidence team conducted two studies examining Knowledge Broker impact in Canadian public health departments. The effectiveness of knowledge translation strategies of varying intensities for promoting the use of research evidence in decisions related to child obesity prevention were explored via a randomized controlled trial with a fundamental descriptive component (2003-2007). In a case study (2010-2013), the authors partnered with three health departments to develop and implement tailored strategies targeted at the organization. Knowledge Brokers worked with designated staff in these studies via one-on-one consultations, small group meetings, and/or workshops and presentations. The Knowledge Broker role was assessed by analysing data from close-ended surveys, interviews, organizational documents, and reflective journals. RESULTS: In this paper, the authors focus on findings from the qualitative analysis of implementing the Knowledge Broker role in both studies and explore several contextual factors that impacted study outcomes. Knowledge Brokers were shown to enhance individual capacity by improving knowledge and skill in searching for, critically appraising, and applying research evidence to practice-based issues. Organizational capacity was also enhanced with strong management support and policies. Effective Knowledge Broker attributes included both expertise in research methodology and public health, as well as intangible traits such as approachability and patience. Finally, optimal positioning and ways of working were identified, including the importance of in-person meetings and neutrality of the Knowledge Broker. CONCLUSIONS: Knowledge brokering is a potentially promising knowledge translation strategy for public health, though additional feasibility and cost-effectiveness data are still needed. The research presented here further highlights the importance of context and adopting a tailored approach to implement a Knowledge Broker strategy.

The Association between Obesity and Cancer Risk: A Meta-Analysis of Observational Studies from 1985 to 2011.

Background. Cancer and cardiovascular diseases are the leading causes of mortality and morbidity worldwide. The purpose of this meta-analysis is to synthesize the evidence evaluating the association between obesity and 13 cancers shown previously to be significantly associated with obesity. Methods. Relevant papers from a previously conducted review were included in this paper. In addition, database searches of Medline and Embase identified studies published from the date of the search conducted for the previous review (January, 2007) until May, 2011. The reference lists of relevant studies and systematic reviews were screened to identify additional studies. Relevance assessment, quality assessment, and data extraction for each study were conducted by two reviewers independently. Meta-analysis was performed for men and women separately using DerSimonian and Laird's random effects model. Results. A total of 98 studies conducted in 18 countries from 1985 to 2011 were included. Data extraction was completed on the 57 studies judged to be of strong and moderate methodological quality. Results illustrated that obese men were at higher risk for developing colon (Risk Ratio (RR), 1.57), renal (1.57), gallbladder (1.47), pancreatic (1.36), and malignant melanoma cancers (1.26). Obese women were at higher risk for esophageal adenocarcinoma (2.04), endometrial (1.85), gallbladder (1.82), renal (1.72), pancreatic (1.34), leukemia (1.32), postmenopausal breast (1.25), and colon cancers (1.19). Conclusions. The results of this meta-analysis illustrate a significant, positive, and, for some cancers, strong association between obesity and cancer incidence. Given that approximately 23% of Canadians are obese, a significant proportion of cancer in Canada could be avoided if obesity was eliminated or significantly reduced.

A knowledge transfer strategy for public health decision makers.

PURPOSE: The purpose of this study was to discover public health decision makers' preferences for content, format, and channels for receiving research knowledge, so as to begin development of a comprehensive national public health knowledge transfer strategy. A preliminary knowledge transfer strategy developed in part from the views expressed by public health decision makers in an earlier study (Dobbins et al. 2002b) was used as a foundation on which to base discussions. The research team believes strongly that consultation with potential users is crucial to ensure the conduct of relevant and timely research as well as the development of an effective knowledge transfer strategy. METHODS: Nine focus groups of five to seven participants were held in seven Canadian cities. Participants included medical officers of health, public health managers and directors, health promotion mangers, and health policymakers at provincial and federal levels. A semi-structured, open-ended interview guide was used to facilitate the discussion. The focus groups were audiotaped, and results were analyzed independently by two members of the research team who then developed key themes through a consensus process. RESULTS: Generally, participants spoke positively about the knowledge transfer strategy to which they were exposed. In addition, they supported the development of a registry of reviews evaluating the effectiveness of public health interventions rated by methodological quality of the evidence, with a summary statement of the reviews highlighting the results along with specific implications for practice. Participants also indicated they wanted to receive personalized updates of new reviews in their area of interest. Finally, the results highlighted a significant challenge related to knowledge management indicating opportunities for ongoing professional development and training. CONCLUSIONS: These findings were used to create an online registry of reviews evaluating the effectiveness of public health and health promotion interventions. The registry is one component of a comprehensive national public health knowledge transfer strategy.