High Quality Content by WIKIPEDIA articles! Evidence-based policy is public policy informed by rigorously established objective evidence. It is an extension of the idea of evidence-based medicine to all areas of public policy. An important aspect of evidence-based policy is the use of scientifically rigorous studies such as randomized controlled trials to identify programs and practices capable of improving policy relevant outcomes. However, some areas of knowledge are not well serviced by quantitative research, leading to debate about the methods and instruments that are considered critical for the collection of relevant evidence. Good data, analytical skills and political support, as such, are seen as the important elements.