ACE Star Model
© July 2002 Stevens
The Cycle of Knowledge Transformation® is a new model for evidence-based practice (EBP) that organizes both old and new concepts of improving care into a whole and provides a framework with which to organize EBP processes and approaches. Known as the ACE Star Model, it is a simple, parsimonious depiction of the relationships between various stages of transformation, as newly discovered knowledge is moved into practice. It is inclusive of familiar processes and also emphasizes the unique aspects of EBP.
Configured as a simple 5-point star, the model illustrates five major stages of knowledge transformation: 1) knowledge discovery, 2) evidence synthesis, 3) translation into practice recommendations, 4) implementation into practice, and 5) evaluation. Evidence-based processes and methods vary from one point of the star model to the next. The ACE Star Model places nursing's previous scientific work within the context of EBP and serves as an organizer for examining and applying EBP, and mainstreams nursing into the formal network of EBP.
The rigorous evidence summary step distinguishes EBP from the old paradigm of research utilization. Largely due to the work of the Cochrane Collaboration, rigorous methods for systematic reviews have been greatly advanced, using meta analytic techniques and developing other statistical summary strategies, such as Number Needed to Treat (NNT).
Advantages of an Evidence Summary:
The transformation of evidence summaries into actual practice requires two processes: translation of evidence into practice recommendations and implementation.
STAR POINT 3. Translation
The aim of translation is to provide a useful and relevant package of summarized evidence to clinicians and clients in a form that suits the time, cost, and care standard. Recommendations are generically termed clinical practice guidelines (CPGs) and may take on a variety of forms, such as care standards, clinical pathways, protocols, and algorithms.
CPGs are tools to support informed clinical decisions for clinician, organization, and client. Well-developed CPGs state benefits, harms, and costs of various decision options. The strongest CPGs are developed systematically using an approach that is articulated and reproducible. Research evidence is interpreted and combined with other sources of knowledge (such as clinical expertise and theoretical guides) and contextualized to the specific client population and setting. EBP CPGs make explicit the link between the clinical recommendation and the level of supporting evidence.
As new knowledge is transformed through the five stages, the final outcome is quality improvement of health care.
Bibliographic Citation for the ACE Star Model:
Stevens, K. R. (2002). ACE Star Model of EBP: The Cycle of Knowledge Transformation. Academic Center for Evidence-based Practice. http://www.acestar.uthscsa.edu/Goals/www.acestar.uthscsa.edu
Questions or Comments Email: Sharonjm@midsouth.rr.com