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Table 2 Definitions of audit

From: What do we know about how to do audit and feedback? Pitfalls in applying evidence from a systematic review

Definition of audit endorsed by the National Institute for Clinical Excellence [4]
A quality improvement process that seeks to improve patient care and outcomes through systematic review of care against explicit criteria and the implementation of change. Aspects of the structure, processes, and outcomes of care are selected and systematically evaluated against explicit criteria. Where indicated, changes are implemented at an individual, team, or service level and further monitoring is used to confirm improvement in healthcare delivery.
Definition of audit used by the Cochrane systematic review [5]
The provision of any summary of clinical performance over a specified period of time. The summary may include data on processes of care (e.g. number of diagnostic tests ordered), clinical endpoints (e.g. blood pressure readings), and clinical practice recommendations (proportion of patients managed in line with a recommendation).