The use of robust research findings in public health policy has been strongly encouraged for bridging the evidence-policy gap. To assess and further promote evidence uptake, understanding how research evidence is being used by decision makers is very important. This systematic review examined primary studies exploring the use of research evidence in public health policy published between 2010 and January 2016; this work extended Orton et al’s (2011) review that covered studies published between 1980 and March 2010. The current systematic review incorporated 16 studies, representing 864 individuals, that provided insight into five topics pertaining to public health policy decision making: 1) the extent to which research evidence is used; 2) types of research evidence used; 3) the process of using research evidence; 4) factors other than research influencing decisions; and 5) barriers to and facilitators of evidence use. Relevant studies were identified using five different information sources including 14 electronic databases, websites of key organisations, forward citation search, reverse citation search, and internet search engines. Eligibility and methodological quality were assessed independently by two reviewers. The primary author conducted data extraction and the remaining authors reviewed the extraction results. Due to study heterogeneity, data were synthesised and findings were reported using a narrative approach. Findings aligned with previous literature to show that various types of research evidence are being accessed in public health policymaking. Further, challenges and enablers exist at multiple levels of the system, suggesting that use of research evidence is a complex, interdependent process.

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Background: Ways of perceiving evidence by public health managers, practitioners and policy