Advances in health policy 2007.

Stroke Policy and Related Evidence The Role of Evidence in Stroke Policy Investments Different types of evidence are required at each stage in the development and implementation of large scale stroke strategies. The role of evidence was examined in the development of the Ontario Stroke System (a $30 million per year health policy initiative to improve stroke care in Ontario, Canada). Researchers identified key stages in the implementation process and the various types of evidence mobilized at each stage.1 The value of this research for stroke knowledge translation and policy is that evidence can be systematically organized and shared strategically to achieve policy commitments.