Diffusion of Innovations in Service Organizations: Systematic Review and Recommendations TRISHA GREENHALGH, GLENN ROBERT, FRASER MACFARLANE∗,PAULBATE, and OLIVIA KYRIAKIDOU∗ University College London; ∗University of Surrey This article summarizes an extensive literature review addressing the question, How can we spread and sustain innovations in health service delivery and or- ganization? It considers both content (defining and measuring the diffusion of innovation in organizations) and process (reviewing the literature in a sys- tematic and reproducible way). This article discusses (1) a parsimonious and evidence-based model for considering the diffusion of innovations in health service organizations, (2) clear knowledge gaps where further research should be focused, and (3) a robust and transferable methodology for systematically re- viewing health service policy and management. Both the model and the method should be tested more widely in a range of contexts. Key Words: Diffusion of innovation, systematic review, implementation. his article summarizes the findings of a systematic literature review of the diffusion of service inno- T vations. The United Kingdom Department of Health explic- itly commissioned this work, which was carried out between October 2002 and December 2003, for its National Health Service’s exten- sive modernization agenda (UK Department of Health 2001). Our review, which supplements and extends previous overviews and meta- analyses (Damanpour 1991, 1992, 1996; Granados et al. 1997; Meyers, Sivakumar, and Nakata 1999; Rogers 1995; Tornatsky and Klein 1982; Address correspondence to: Trisha Greenhalgh, University College London, Room 403, Holborn Union Building, Highgate Hill, London N19 5LW, United Kingdom (e-mail:
[email protected]). The Milbank Quarterly, Vol.